diff --git a/proposal/mutant/build.xml b/proposal/mutant/build.xml
index f096817f8..b5af3e7ab 100644
--- a/proposal/mutant/build.xml
+++ b/proposal/mutant/build.xml
@@ -144,28 +144,25 @@
     <delete dir="${dist.dir}"/>
   </target>
 
-  <target name="antlibs" depends="common">
-    <antcall target="build-lib">
-      <param name="libset" value="system"/>
-    </antcall>
+  <target name="antlibs" depends="common, systemlib">
     <ant antfile="build/script.xml"/> 
   </target>
   
-  <target name="build-lib">
-    <mkdir dir="${bin.dir}/antlibs/${libset}"/>
-    <mkdir dir="${distlib.dir}/antlibs"/>
+  <target name="systemlib" depends="common">
+    <mkdir dir="${bin.dir}/antlibs/system"/>
+    <mkdir dir="${distlib.dir}/syslibs"/>
     <path id="classpath.antlibs">
       <path refid="classpath.common"/>
       <pathelement location="${distlib.dir}/common/common.jar"/>
     </path>
-    <depend destdir="${bin.dir}/antlibs/${libset}" srcdir="${java.dir}/antlibs/${libset}">
+    <depend destdir="${bin.dir}/antlibs/system" srcdir="${java.dir}/antlibs/system">
       <classpath refid="classpath.antlibs"/>
     </depend>
-    <javac destdir="${bin.dir}/antlibs/${libset}" srcdir="${java.dir}/antlibs/${libset}" debug="${debug}">
+    <javac destdir="${bin.dir}/antlibs/system" srcdir="${java.dir}/antlibs/system" debug="${debug}">
       <classpath refid="classpath.antlibs"/>
     </javac>
-    <jar basedir="${bin.dir}/antlibs/${libset}" jarfile="${distlib.dir}/antlibs/${libset}.jar">
-      <metainf dir="${java.dir}/antlibs/${libset}" 
+    <jar basedir="${bin.dir}/antlibs/system" jarfile="${distlib.dir}/syslibs/system.jar">
+      <metainf dir="${java.dir}/antlibs/system" 
                 includes="antlib.xml"/>
     </jar>
   </target>
diff --git a/proposal/mutant/build/ant1compat.xml b/proposal/mutant/build/ant1compat.xml
index 77dc1c910..459456961 100644
--- a/proposal/mutant/build/ant1compat.xml
+++ b/proposal/mutant/build/ant1compat.xml
@@ -43,6 +43,7 @@
     <exclude name="org/apache/tools/ant/ProjectHelper.java"/>
     <exclude name="org/apache/tools/ant/Task.java"/>
     <exclude name="org/apache/tools/ant/Main.java"/>
+    <exclude name="org/apache/tools/ant/input/InputRequest.java"/>
   </patternset>
 
   <patternset id="notrequired">
@@ -63,6 +64,7 @@
     <include name="org/apache/tools/mail/**/*.java"/>
     <include name="org/apache/tools/tar/**/*.java"/>
     <include name="org/apache/tools/ant/*.java"/>
+    <include name="org/apache/tools/ant/input/*.java"/>
     <!-- <patternset refid="deprecated"/> -->
     <patternset refid="toohard"/>
     <patternset refid="converted"/>
@@ -74,7 +76,7 @@
     <fileset dir="${lib.dir}/parser" includes="*.jar"/>
     <fileset dir="${lib.dir}/ant1compat" includes="*.jar"/>
     <pathelement location="${distlib.dir}/common/common.jar"/>
-    <pathelement location="${distlib.dir}/antlibs/system.jar"/>
+    <pathelement location="${distlib.dir}/syslibs/system.jar"/>
   </path>
 
   <!--
@@ -480,6 +482,7 @@
        </fileset>
     </copy>
 
+    <mkdir dir="${distlib.dir}/antlibs/"/>
     <jar basedir="${bin.dir}/ant1compat" jarfile="${distlib.dir}/antlibs/ant1compat.jar">
       <metainf dir="${java.dir}/antlibs/ant1compat" 
                 includes="antlib.xml"/>
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/antlib/AntLibManager.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/antlib/AntLibManager.java
index a70a8f34c..81662fbf2 100644
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/antlib/AntLibManager.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/antlib/AntLibManager.java
@@ -152,7 +152,7 @@ public class AntLibManager {
      * @param librarySpecs the loaded specifications of the Ant libraries
      * @param initConfig the Ant initialization configuration
      * @param libraries the collection of libraries already configured
-     * @param libPathsMap a map of lists of library patsh fro each library
+     * @param libPathsMap a map of lists of library paths for each library
      * @exception ExecutionException if a library cannot be configured from
      *      the given specification
      */
@@ -231,7 +231,7 @@ public class AntLibManager {
     }
 
     /**
-     * add a library path to the given library
+     * Add a library path to the given library
      *
      * @param antLibrary the library to which the path is to be added
      * @param path the path to be added
@@ -320,11 +320,13 @@ public class AntLibManager {
             antLibrary.setParentLoader(initConfig.getCommonLoader());
             libraries.put(libraryId, antLibrary);
 
-            List libPaths = (List) libPathsMap.get(libraryId);
-            if (libPaths != null) {
-                for (Iterator j = libPaths.iterator(); j.hasNext();) {
-                    URL pathURL = (URL) j.next();
-                    addLibPath(antLibrary, pathURL);
+            if (libPathsMap != null) {
+                List libPaths = (List) libPathsMap.get(libraryId);
+                if (libPaths != null) {
+                    for (Iterator j = libPaths.iterator(); j.hasNext();) {
+                        URL pathURL = (URL) j.next();
+                        addLibPath(antLibrary, pathURL);
+                    }
                 }
             }
 
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/AntConfig.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/AntConfig.java
index d02b12f63..8829095df 100755
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/AntConfig.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/AntConfig.java
@@ -63,6 +63,7 @@ import java.util.Map;
 import org.apache.ant.common.util.ConfigException;
 import org.apache.ant.common.util.PathTokenizer;
 import org.apache.ant.init.InitUtils;
+import org.apache.ant.common.model.BuildElement;
 
 /**
  * An AntConfig is the java class representation of the antconfig.xml files
@@ -72,15 +73,6 @@ import org.apache.ant.init.InitUtils;
  * @created 20 January 2002
  */
 public class AntConfig {
-    /** The list of additional directories to be searched for Ant libraries */
-    private List libraryLocations = new ArrayList();
-
-    /**
-     * A list of additional paths for each ant library, indexed on the
-     * library id
-     */
-    private Map libPaths = new HashMap();
-
     /** Indicates if remote libraries may be used */
     private boolean remoteLibs = false;
 
@@ -90,6 +82,11 @@ public class AntConfig {
     /** Indicates if unset properties are ignored */
     private boolean unsetProperties = true;
 
+    /**
+     * Configuration tasks. 
+     */
+    private List tasks = new ArrayList();
+    
     /**
      * Indicate if unset properties are OK.
      *
@@ -118,50 +115,21 @@ public class AntConfig {
     }
 
     /**
-     * Get the additional locations in which to search for Ant Libraries
-     *
-     * @return an iterator over the library locations
-     */
-    public Iterator getLibraryLocations() {
-        return libraryLocations.iterator();
-    }
-
-    /**
-     * Get the list of additional path components for a given path
+     * Get the configuration tasks
      *
-     * @param libraryId the identifier for the library
-     * @return the list of URLs for the additional paths for the given
-     *      library
+     * @return an iterator over the set of config tasks.
      */
-    public List getLibraryPathList(String libraryId) {
-        List libraryPathList = (List) libPaths.get(libraryId);
-        if (libraryPathList == null) {
-            libraryPathList = new ArrayList();
-            libPaths.put(libraryId, libraryPathList);
-        }
-        return libraryPathList;
+    public Iterator getTasks() {
+        return tasks.iterator();
     }
 
-
     /**
-     * Get the map of library paths. This map contains a collection of List
-     * instances, indexed by the libraryIds. Each list is a set of
-     * additional classpath entries for the given library
+     * Add a config task.
      *
-     * @return the library paths map
+     * @param task a task to be executed as part of the configuration process.
      */
-    public Map getLibraryPathsMap() {
-        return libPaths;
-    }
-
-    /**
-     * Gets the libraryIds of the AntConfig
-     *
-     * @return an interator over the library identifiers for which there is
-     *      additional path information
-     */
-    public Iterator getLibraryIds() {
-        return libPaths.keySet().iterator();
+    public void addTask(BuildElement task) {
+        tasks.add(task);
     }
 
     /**
@@ -191,88 +159,18 @@ public class AntConfig {
     public void allowUnsetProperties(boolean allowUnsetProperties) {
         this.unsetProperties = allowUnsetProperties;
     }
-
-    /**
-     * Add an additional set of paths for the given library.
-     *
-     * @param libraryId The library id for which the additional class path
-     *      is being specified
-     * @param libraryPath the classpath style string for the library's
-     *      additonal paths
-     * @exception ConfigException if the appropriate URLs cannot be formed.
-     */
-    public void addLibPath(String libraryId, String libraryPath)
-         throws ConfigException {
-        try {
-            List libraryPathList = getLibraryPathList(libraryId);
-            PathTokenizer p = new PathTokenizer(libraryPath);
-            while (p.hasMoreTokens()) {
-                String pathElement = p.nextToken();
-                File pathElementFile = new File(pathElement);
-                URL pathElementURL = InitUtils.getFileURL(pathElementFile);
-                libraryPathList.add(pathElementURL);
-            }
-        } catch (MalformedURLException e) {
-            throw new ConfigException("Unable to process libraryPath '"
-                 + libraryPath + "' for library '" + libraryId + "'", e);
-        }
-    }
-
-    /**
-     * Add an additional URL for the library's classpath
-     *
-     * @param libraryId the library's unique Id
-     * @param libraryURL a string which points to the additonal path
-     * @exception ConfigException if the URL could not be formed
-     */
-    public void addLibURL(String libraryId, String libraryURL)
-         throws ConfigException {
-        try {
-            List libraryPathList = getLibraryPathList(libraryId);
-            libraryPathList.add(new URL(libraryURL));
-        } catch (MalformedURLException e) {
-            throw new ConfigException("Unable to process libraryURL '"
-                 + libraryURL + "' for library '" + libraryId + "'", e);
-        }
-
-    }
-
+    
     /**
-     * Merge in another ocnfiguration. The configuration being merged in
+     * Merge in another configuration. The configuration being merged in
      * takes precedence
      *
      * @param otherConfig the other AntConfig to be merged.
      */
     public void merge(AntConfig otherConfig) {
-        // merge by
-        List currentLibraryLocations = libraryLocations;
-        libraryLocations = new ArrayList();
-        libraryLocations.addAll(otherConfig.libraryLocations);
-        libraryLocations.addAll(currentLibraryLocations);
-
-        Iterator i = otherConfig.libPaths.keySet().iterator();
-        while (i.hasNext()) {
-            String libraryId = (String) i.next();
-            List currentList = getLibraryPathList(libraryId);
-            List combined = new ArrayList();
-            combined.addAll(otherConfig.getLibraryPathList(libraryId));
-            combined.addAll(currentList);
-            libPaths.put(libraryId, combined);
-        }
-
         remoteLibs = otherConfig.remoteLibs;
         remoteProjects = otherConfig.remoteProjects;
         unsetProperties = otherConfig.unsetProperties;
-    }
-
-    /**
-     * Add a new task directory to be searched for additional Ant libraries
-     *
-     * @param libraryLocation the location (can be a file or a URL) where
-     *      the libraries may be loaded from.
-     */
-    public void addAntLibraryLocation(String libraryLocation) {
-        libraryLocations.add(libraryLocation);
+        tasks.addAll(otherConfig.tasks);
     }
 }
 
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/AntConfigHandler.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/AntConfigHandler.java
index a0399e462..3d42063af 100755
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/AntConfigHandler.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/AntConfigHandler.java
@@ -54,6 +54,7 @@
 package org.apache.ant.antcore.config;
 import org.apache.ant.common.util.ConfigException;
 import org.apache.ant.antcore.xml.ElementHandler;
+import org.apache.ant.antcore.modelparser.BuildElementHandler;
 import org.xml.sax.Attributes;
 import org.xml.sax.SAXParseException;
 
@@ -123,36 +124,17 @@ public class AntConfigHandler extends ElementHandler {
                              Attributes attributes)
          throws SAXParseException {
 
-        try {
-            if (qualifiedName.equals("loadlib")) {
-                LoadLibHandler loadlibHandler
-                     = new LoadLibHandler();
-                loadlibHandler.start(getParseContext(), getXMLReader(),
-                    this, getLocator(), attributes, getElementSource(),
-                    qualifiedName);
-                config.addAntLibraryLocation(loadlibHandler.getLibLocation());
-            } else if (qualifiedName.equals("libpath")) {
-                LibPathHandler libPathHandler
-                     = new LibPathHandler();
-                libPathHandler.start(getParseContext(), getXMLReader(),
-                    this, getLocator(), attributes, getElementSource(),
-                    qualifiedName);
-
-                if (libPathHandler.getLibraryPath() != null) {
-                    config.addLibPath(libPathHandler.getLibraryId(),
-                        libPathHandler.getLibraryPath());
-                } else {
-                    config.addLibURL(libPathHandler.getLibraryId(),
-                        libPathHandler.getLibraryURL());
-                }
-
-            } else {
-                super.startElement(uri, localName, qualifiedName, attributes);
-            }
-        } catch (ConfigException e) {
-            throw new SAXParseException("Unable to process config",
-                getLocator(), e);
-        }
+        // everything else is a task
+        BuildElementHandler buildElementHandler = new BuildElementHandler();
+        buildElementHandler.start(getParseContext(), getXMLReader(),
+            this, getLocator(), attributes, getElementSource(),
+            qualifiedName);
+        config.addTask(buildElementHandler.getBuildElement());
+//        try {
+//        } catch (ConfigException e) {
+//            throw new SAXParseException("Unable to process config",
+//                getLocator(), e);
+//        }
     }
 
     /**
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/LibPathHandler.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/LibPathHandler.java
deleted file mode 100755
index be405e521..000000000
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/LibPathHandler.java
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2002 The Apache Software Foundation.  All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * 3. The end-user documentation included with the redistribution, if
- *    any, must include the following acknowlegement:
- *       "This product includes software developed by the
- *        Apache Software Foundation (http://www.apache.org/)."
- *    Alternately, this acknowlegement may appear in the software itself,
- *    if and wherever such third-party acknowlegements normally appear.
- *
- * 4. The names "The Jakarta Project", "Ant", and "Apache Software
- *    Foundation" must not be used to endorse or promote products derived
- *    from this software without prior written permission. For written
- *    permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- *    nor may "Apache" appear in their names without prior written
- *    permission of the Apache Group.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation.  For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
-package org.apache.ant.antcore.config;
-
-import org.apache.ant.antcore.xml.ElementHandler;
-import org.xml.sax.SAXParseException;
-
-/**
- * An XML Handler for the libpath element in an Ant config file
- *
- * @author Conor MacNeill
- * @created 20 January 2002
- */
-public class LibPathHandler extends ElementHandler {
-    /** The library identifier attribute name */
-    public static final String LIBID_ATTR = "libid";
-    /** The path attribute name */
-    public static final String PATH_ATTR = "path";
-    /** The path attribute name */
-    public static final String URL_ATTR = "url";
-
-    /**
-     * Get the libraryId for which the additional path is being defined
-     *
-     * @return the library's unique id
-     */
-    public String getLibraryId() {
-        return getAttribute(LIBID_ATTR);
-    }
-
-    /**
-     * Get the additional path being defined fro the library
-     *
-     * @return the libraryPath value, may be null
-     */
-    public String getLibraryPath() {
-        return getAttribute(PATH_ATTR);
-    }
-
-    /**
-     * Get the URL (as a string) containing the additional path for the
-     * library.
-     *
-     * @return the libraryURL value
-     */
-    public String getLibraryURL() {
-        return getAttribute(URL_ATTR);
-    }
-
-
-    /**
-     * Process the libpath element
-     *
-     * @param elementName the name of the element
-     * @exception SAXParseException if there is a problem parsing the
-     *      element
-     */
-    public void processElement(String elementName)
-         throws SAXParseException {
-        if (getLibraryId() == null
-             || (getLibraryPath() == null && getLibraryURL() == null)
-             || (getLibraryPath() != null && getLibraryURL() != null)) {
-            throw new SAXParseException("The " + LIBID_ATTR
-                 + " attribute and only one of "
-                 + PATH_ATTR + " or " + URL_ATTR
-                 + " attributes must be specified for a libpath element",
-                getLocator());
-        }
-    }
-
-    /**
-     * Validate that the given attribute and value are valid.
-     *
-     * @param attributeName The name of the attributes
-     * @param attributeValue The value of the attributes
-     * @exception SAXParseException if the attribute is not allowed on the
-     *      element.
-     */
-    protected void validateAttribute(String attributeName,
-                                     String attributeValue)
-         throws SAXParseException {
-        if (!attributeName.equals(LIBID_ATTR) &&
-            !attributeName.equals(PATH_ATTR) &&
-            !attributeName.equals(URL_ATTR)) {
-            throwInvalidAttribute(attributeName);
-        }
-    }
-}
-
-
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/LoadLibHandler.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/LoadLibHandler.java
deleted file mode 100644
index 29aa2e792..000000000
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/config/LoadLibHandler.java
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 2002 The Apache Software Foundation.  All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * 3. The end-user documentation included with the redistribution, if
- *    any, must include the following acknowlegement:
- *       "This product includes software developed by the
- *        Apache Software Foundation (http://www.apache.org/)."
- *    Alternately, this acknowlegement may appear in the software itself,
- *    if and wherever such third-party acknowlegements normally appear.
- *
- * 4. The names "The Jakarta Project", "Ant", and "Apache Software
- *    Foundation" must not be used to endorse or promote products derived
- *    from this software without prior written permission. For written
- *    permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- *    nor may "Apache" appear in their names without prior written
- *    permission of the Apache Group.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation.  For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
-package org.apache.ant.antcore.config;
-
-import org.apache.ant.antcore.xml.ElementHandler;
-import org.xml.sax.SAXParseException;
-
-/**
- * An XML handler to handle the loadlib element of an AntConfig file.
- *
- * @author Conor MacNeill
- * @created 20 January 2002
- */
-public class LoadLibHandler extends ElementHandler {
-    /** The location attribute name */
-    public static final String LOCATION_ATTR = "location";
-
-    /**
-     * Get the location of the additional search directory
-     *
-     * @return the additional directory to be searched for Ant libraries.
-     */
-    public String getLibLocation() {
-        return getAttribute(LOCATION_ATTR);
-    }
-
-    /**
-     * Process the loadlibs element
-     *
-     * @param elementName the name of the element
-     * @exception SAXParseException if there is a problem parsing the
-     *      element
-     */
-    public void processElement(String elementName)
-         throws SAXParseException {
-        if (getLocation() == null) {
-            throw new SAXParseException(LOCATION_ATTR
-                 + " must be specified for a taskdir element", getLocator());
-        }
-    }
-
-    /**
-     * Validate that the given attribute and value are valid.
-     *
-     * @param attributeName The name of the attributes
-     * @param attributeValue The value of the attributes
-     * @exception SAXParseException if the attribute is not allowed on the
-     *      element.
-     */
-    protected void validateAttribute(String attributeName,
-                                     String attributeValue)
-         throws SAXParseException {
-        if (!attributeName.equals(LOCATION_ATTR)) {
-            throwInvalidAttribute(attributeName);
-        }
-    }
-}
-
-
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ComponentManager.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ComponentManager.java
index e8dc4fd15..347fc6e80 100644
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ComponentManager.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ComponentManager.java
@@ -79,6 +79,7 @@ import org.apache.ant.common.service.ComponentService;
 import org.apache.ant.common.util.ExecutionException;
 import org.apache.ant.common.util.Location;
 import org.apache.ant.init.LoaderUtils;
+import org.apache.ant.antcore.config.AntConfig;
 
 /**
  * The instance of the ComponentServices made available by the core to the
@@ -110,7 +111,7 @@ public class ComponentManager implements ComponentService {
      * These are AntLibraries which have been loaded into this component
      * manager
      */
-    private Map antLibraries;
+    private Map antLibraries = new HashMap();
 
     /** dynamic libraries which have been defined */
     private Map dynamicLibraries;
@@ -122,7 +123,7 @@ public class ComponentManager implements ComponentService {
      * This map stores a list of additional paths for each library indexed
      * by the libraryId
      */
-    private Map libPathsMap;
+    private Map libPathsMap = new HashMap();
 
     /** Reflector objects used to configure Tasks from the Task models. */
     private Map setters = new HashMap();
@@ -132,17 +133,13 @@ public class ComponentManager implements ComponentService {
      * Constructor
      *
      * @param frame the frame containing this context
-     * @param allowRemoteLibs true if remote libraries can be loaded though
-     *      this service.
-     * @param configLibPaths the additional library paths specified in the
-     *      configuration
      */
-    protected ComponentManager(Frame frame, boolean allowRemoteLibs,
-                               Map configLibPaths) {
+    protected ComponentManager(Frame frame) {
         this.frame = frame;
-        libManager = new AntLibManager(allowRemoteLibs);
+        AntConfig config = frame.getConfig();
+        libManager = new AntLibManager(config.isRemoteLibAllowed());
         dynamicLibraries = new HashMap();
-        libPathsMap = new HashMap(configLibPaths);
+        libPathsMap = new HashMap();
     }
 
     /**
@@ -162,10 +159,11 @@ public class ComponentManager implements ComponentService {
             libManager.configLibraries(frame.getInitConfig(), librarySpecs,
                 antLibraries, libPathsMap);
 
-            if (importAll) {
-                Iterator i = librarySpecs.keySet().iterator();
-                while (i.hasNext()) {
-                    String libraryId = (String) i.next();
+            Iterator i = librarySpecs.keySet().iterator();
+            while (i.hasNext()) {
+                String libraryId = (String) i.next();
+                if (importAll 
+                    || libraryId.startsWith(Constants.ANT_LIB_PREFIX)) {
                     importLibrary(libraryId);
                 }
             }
@@ -345,30 +343,6 @@ public class ComponentManager implements ComponentService {
             componentName, componentName, addTaskAdapter, null);
     }
 
-    /**
-     * Set the standard libraries (i.e. those which are independent of the
-     * build files) to be used in this component manager
-     *
-     * @param standardLibs A collection of AntLibrary objects indexed by
-     *      their libraryId
-     * @exception ExecutionException if the components cannot be imported
-     *      form the libraries fro which such importing is automatic.
-     */
-    protected void setStandardLibraries(Map standardLibs)
-         throws ExecutionException {
-
-        antLibraries = new HashMap(standardLibs);
-
-        // go through the libraries and import all standard ant libraries
-        for (Iterator i = antLibraries.keySet().iterator(); i.hasNext();) {
-            String libraryId = (String) i.next();
-            if (libraryId.startsWith(Constants.ANT_LIB_PREFIX)) {
-                // standard library - import whole library
-                importLibrary(libraryId);
-            }
-        }
-    }
-
     /**
      * Get the collection ov converters currently configured
      *
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Constants.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Constants.java
index 27492f84a..7b93c42cc 100644
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Constants.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Constants.java
@@ -65,6 +65,5 @@ public abstract class Constants {
 
     /** The Ant aspect used to identify Ant metadata */
     public static final String ANT_ASPECT = "ant";
-
 }
 
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/CoreExecService.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/CoreExecService.java
index a3200af42..b82a6d3ab 100644
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/CoreExecService.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/CoreExecService.java
@@ -234,30 +234,6 @@ public class CoreExecService implements ExecService {
     }
 
 
-    /**
-     * Setup a sub-build.
-     *
-     * @param properties the initiali properties to be used in the build
-     * @param model XXX Description of the Parameter
-     * @return Description of the Return Value
-     * @exception ExecutionException if the subbuild cannot be run
-     */
-    /*
-    public Object setupBuild(File antFile, Map properties)
-         throws ExecutionException {
-        try {
-            // Parse the build file into a project
-            XMLProjectParser parser = new XMLProjectParser();
-            Project project
-                 = parser.parseBuildFile(InitUtils.getFileURL(antFile));
-            return setupBuild(project, properties);
-        } catch (MalformedURLException e) {
-            throw new ExecutionException(e);
-        } catch (XMLParseException e) {
-            throw new ExecutionException(e);
-        }
-    }
-*/
     /**
      * Setup a sub-build.
      *
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ExecutionManager.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ExecutionManager.java
index 24e96fbd6..9111e9f5c 100755
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ExecutionManager.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/ExecutionManager.java
@@ -77,9 +77,6 @@ import org.apache.ant.init.InitConfig;
  * @created 12 January 2002
  */
 public class ExecutionManager implements DemuxOutputReceiver {
-    /** The AntLibraries built from Ant's Populated Task Libraries. */
-    private Map antLibraries = new HashMap();
-
     /** BuildEvent support used to fire events and manage listeners */
     private BuildEventSupport eventSupport = new BuildEventSupport();
 
@@ -122,32 +119,6 @@ public class ExecutionManager implements DemuxOutputReceiver {
      *      loaded
      */
     public void init() throws ExecutionException {
-        Map librarySpecs = new HashMap(10);
-        try {
-            // start by loading the task libraries
-            URL standardLibsURL
-                 = new URL(initConfig.getLibraryURL(), "antlibs/");
-
-            AntLibManager libManager
-                 = new AntLibManager(config.isRemoteLibAllowed());
-
-            libManager.loadLibs(librarySpecs, standardLibsURL);
-            libManager.configLibraries(initConfig, librarySpecs, antLibraries,
-                config.getLibraryPathsMap());
-
-            librarySpecs.clear();
-            // add any additional libraries.
-            for (Iterator i = config.getLibraryLocations(); i.hasNext();) {
-                // try file first
-                String libLocation = (String) i.next();
-                libManager.loadLibs(librarySpecs, libLocation);
-            }
-            libManager.configLibraries(initConfig, librarySpecs, antLibraries,
-                config.getLibraryPathsMap());
-
-        } catch (MalformedURLException e) {
-            throw new ExecutionException("Unable to load Ant libraries", e);
-        }
     }
 
     /**
@@ -167,7 +138,7 @@ public class ExecutionManager implements DemuxOutputReceiver {
             // start by validating the project we have been given.
             project.validate();
 
-            mainFrame = new Frame(antLibraries, initConfig, config);
+            mainFrame = new Frame(initConfig, config);
             for (Iterator j = eventSupport.getListeners(); j.hasNext();) {
                 BuildListener listener = (BuildListener) j.next();
                 mainFrame.addBuildListener(listener);
diff --git a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Frame.java b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Frame.java
index 836702248..fee20ebf7 100644
--- a/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Frame.java
+++ b/proposal/mutant/src/java/antcore/org/apache/ant/antcore/execution/Frame.java
@@ -54,6 +54,7 @@
 package org.apache.ant.antcore.execution;
 import java.io.File;
 import java.net.URL;
+import java.net.MalformedURLException;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;
@@ -97,6 +98,13 @@ public class Frame implements DemuxOutputReceiver {
     /** The referenced frames corresponding to the referenced projects */
     private Map referencedFrames = new HashMap();
 
+    /** 
+     * The property overrides for the referenced frames. This map is indexed 
+     * by the reference names of the frame. Each entry is another Map of 
+     * property values indexed by their relative name.
+     */
+    private Map overrides = new HashMap();
+    
     /**
      * The context of this execution. This contains all data object's created
      * by tasks that have been executed
@@ -109,12 +117,6 @@ public class Frame implements DemuxOutputReceiver {
      */
     private InitConfig initConfig;
 
-    /**
-     * These are the standard libraries from which taskdefs, typedefs, etc may
-     * be imported.
-     */
-    private Map standardLibs;
-
     /** BuildEvent support used to fire events and manage listeners */
     private BuildEventSupport eventSupport = new BuildEventSupport();
 
@@ -158,9 +160,8 @@ public class Frame implements DemuxOutputReceiver {
      * @exception ExecutionException if a component of the library cannot be
      *      imported
      */
-    protected Frame(Map standardLibs, InitConfig initConfig,
+    protected Frame(InitConfig initConfig,
                     AntConfig config) throws ExecutionException {
-        this.standardLibs = standardLibs;
         this.config = config;
         this.initConfig = initConfig;
     }
@@ -189,11 +190,7 @@ public class Frame implements DemuxOutputReceiver {
      */
     protected void setProject(Project project) throws ExecutionException {
         this.project = project;
-        referencedFrames = new HashMap();
-
-        configureServices();
-        componentManager.setStandardLibraries(standardLibs);
-        setMagicProperties();
+        referencedFrames.clear();
     }
 
 
@@ -223,9 +220,10 @@ public class Frame implements DemuxOutputReceiver {
         Frame frame = getContainingFrame(name);
 
         if (frame == null) {
-            throw new ExecutionException("There is no project corresponding "
-                 + "to the name \"" + name + "\"");
+            setOverrideProperty(name, value, mutable);
+            return;
         }
+
         if (frame == this) {
             if (dataValues.containsKey(name) && !mutable) {
                 log("Ignoring oveeride for data value " + name,
@@ -238,6 +236,104 @@ public class Frame implements DemuxOutputReceiver {
         }
     }
 
+    /**
+     * When a frame has not yet been referenced, this method is used
+     * to set the initial properties for the frame when it is introduced.
+     *
+     * @param name the name of the value
+     * @param value the actual value
+     * @param mutable if true, existing values can be changed
+     * @exception ExecutionException if attempting to override a property in 
+     *                               the current frame. 
+     */
+    private void setOverrideProperty(String name, Object value, 
+                                     boolean mutable) 
+         throws ExecutionException {
+        int refIndex = name.indexOf(Project.REF_DELIMITER);
+        if (refIndex == -1) {
+            throw new ExecutionException("Property overrides can only be set" 
+                + " for properties in referenced projects - not " 
+                + name);
+        }
+        
+        String firstFrameName = name.substring(0, refIndex);
+        
+        String relativeName 
+            = name.substring(refIndex + Project.REF_DELIMITER.length());
+
+        Map frameOverrides = (Map) overrides.get(firstFrameName);
+        if (frameOverrides == null) {
+            frameOverrides = new HashMap();
+            overrides.put(firstFrameName, frameOverrides);
+        }
+
+        if (mutable || !frameOverrides.containsKey(relativeName)) {
+            frameOverrides.put(relativeName, value);
+        }            
+    }
+    
+    /**
+     * Get a value which exists in the frame property overrides awaiting 
+     * the frame to be introduced.
+     *
+     * @param name the name of the value
+     * @return the value of the property or null if the property does not 
+     * exist.
+     * @exception ExecutionException if attempting to get an override in 
+     *                               the current frame. 
+     */
+    private Object getOverrideProperty(String name) throws ExecutionException {
+        int refIndex = name.indexOf(Project.REF_DELIMITER);
+        if (refIndex == -1) {
+            throw new ExecutionException("Property overrides can only be" 
+                + " returned for properties in referenced projects - not " 
+                + name);
+        }
+        
+        String firstFrameName = name.substring(0, refIndex);
+        
+        String relativeName 
+            = name.substring(refIndex + Project.REF_DELIMITER.length());
+
+        Map frameOverrides = (Map) overrides.get(firstFrameName);
+        if (frameOverrides == null) {
+            return null;
+        }
+
+        return frameOverrides.get(relativeName);
+    }
+    
+    /**
+     * Get a value which exists in the frame property overrides awaiting 
+     * the frame to be introduced.
+     *
+     * @param name the name of the value
+     * @return the value of the property or null if the property does not 
+     * exist.
+     * @exception ExecutionException if attempting to check an override in 
+     *                               the current frame. 
+     */
+    private boolean isOverrideSet(String name) throws ExecutionException {
+        int refIndex = name.indexOf(Project.REF_DELIMITER);
+        if (refIndex == -1) {
+            throw new ExecutionException("Property overrides can only be" 
+                + " returned for properties in referenced projects - not " 
+                + name);
+        }
+        
+        String firstFrameName = name.substring(0, refIndex);
+        
+        String relativeName 
+            = name.substring(refIndex + Project.REF_DELIMITER.length());
+
+        Map frameOverrides = (Map) overrides.get(firstFrameName);
+        if (frameOverrides == null) {
+            return false;
+        }
+
+        return frameOverrides.containsKey(relativeName);
+    }
+    
 
     /**
      * Set the initial properties to be used when the frame starts execution
@@ -456,8 +552,7 @@ public class Frame implements DemuxOutputReceiver {
         Frame frame = getContainingFrame(name);
 
         if (frame == null) {
-            throw new ExecutionException("There is no project corresponding "
-                 + "to the name \"" + name + "\"");
+            return getOverrideProperty(name);
         }
         if (frame == this) {
             return dataValues.get(name);
@@ -480,8 +575,7 @@ public class Frame implements DemuxOutputReceiver {
         Frame frame = getContainingFrame(name);
 
         if (frame == null) {
-            throw new ExecutionException("There is no project corresponding "
-                 + "to the name \"" + name + "\"");
+            return isOverrideSet(name);
         }
         if (frame == this) {
             return dataValues.containsKey(name);
@@ -551,6 +645,14 @@ public class Frame implements DemuxOutputReceiver {
     protected void createProjectReference(String name, Project project) 
         throws ExecutionException {
        Frame referencedFrame = createFrame(project);
+
+       // does the frame have any overrides?
+       Map initialProperties = (Map) overrides.get(name);
+       if (initialProperties != null) {
+           referencedFrame.setInitialProperties(initialProperties);
+           overrides.remove(name);
+       }
+        
        referencedFrames.put(name, referencedFrame);
        referencedFrame.initialize();
     }
@@ -565,7 +667,7 @@ public class Frame implements DemuxOutputReceiver {
     protected Frame createFrame(Project project)
          throws ExecutionException {
         Frame newFrame
-             = new Frame(standardLibs, initConfig, config);
+             = new Frame(initConfig, config);
 
         newFrame.setProject(project);
         for (Iterator j = eventSupport.getListeners(); j.hasNext();) {
@@ -573,6 +675,7 @@ public class Frame implements DemuxOutputReceiver {
 
             newFrame.addBuildListener(listener);
         }
+        
         return newFrame;
     }
 
@@ -840,11 +943,27 @@ public class Frame implements DemuxOutputReceiver {
      *      failed
      */
     protected void initialize() throws ExecutionException {
+        configureServices();
+        setMagicProperties();
         determineBaseDir();
 
-        Iterator taskIterator = project.getTasks();
-
-        executeTasks(taskIterator);
+        try {        
+            // load system ant lib
+            URL systemLibs 
+                = new URL(initConfig.getLibraryURL(), "syslibs/");
+            componentManager.loadLib(systemLibs.toString(), true);
+            
+            // execute any config tasks
+            executeTasks(config.getTasks());
+    
+            // now load other system libraries
+            URL antLibs = new URL(initConfig.getLibraryURL(), "antlibs/");
+            componentManager.loadLib(antLibs.toString(), false);                           
+            
+            executeTasks(project.getTasks());
+        } catch (MalformedURLException e) {
+            throw new ExecutionException("Unable to initialize antlibs", e);
+        }
     }
 
 
@@ -888,8 +1007,7 @@ public class Frame implements DemuxOutputReceiver {
     private void configureServices() {
         // create services and make them available in our services map
         fileService = new CoreFileService(this);
-        componentManager = new ComponentManager(this,
-            config.isRemoteLibAllowed(), config.getLibraryPathsMap());
+        componentManager = new ComponentManager(this);
         dataService = new CoreDataService(this,
             config.isUnsetPropertiesAllowed());
         execService = new CoreExecService(this);
diff --git a/proposal/mutant/src/java/antlibs/ant1compat/antlib.xml b/proposal/mutant/src/java/antlibs/ant1compat/antlib.xml
index a73242d9c..8d0399e29 100644
--- a/proposal/mutant/src/java/antlibs/ant1compat/antlib.xml
+++ b/proposal/mutant/src/java/antlibs/ant1compat/antlib.xml
@@ -38,6 +38,7 @@
   <taskdef name="dependset" classname="org.apache.tools.ant.taskdefs.DependSet"/>
   <taskdef name="ear" classname="org.apache.tools.ant.taskdefs.Ear"/>
   <taskdef name="echo" classname="org.apache.tools.ant.taskdefs.Echo"/>
+  <taskdef name="echoproperties" classname="org.apache.tools.ant.taskdefs.optional.EchoProperties"/>
   <taskdef name="ejbc" classname="org.apache.tools.ant.taskdefs.optional.ejb.Ejbc"/>
   <taskdef name="ejbjar" classname="org.apache.tools.ant.taskdefs.optional.ejb.EjbJar"/>
   <taskdef name="exec" classname="org.apache.tools.ant.taskdefs.ExecTask"/>
@@ -107,6 +108,7 @@
   <taskdef name="sosget" classname="org.apache.tools.ant.taskdefs.optional.sos.SOSGet"/>
   <taskdef name="soslabel" classname="org.apache.tools.ant.taskdefs.optional.sos.SOSLabel"/>
   <taskdef name="sound" classname="org.apache.tools.ant.taskdefs.optional.sound.SoundTask"/>
+  <taskdef name="splash" classname="org.apache.tools.ant.taskdefs.optional.splash.SplashTask"/>
   <taskdef name="sql" classname="org.apache.tools.ant.taskdefs.SQLExec"/>
   <taskdef name="stcheckin" classname="org.apache.tools.ant.taskdefs.optional.starteam.StarTeamCheckin"/>
   <taskdef name="stcheckout" classname="org.apache.tools.ant.taskdefs.optional.starteam.StarTeamCheckout"/>
@@ -155,9 +157,13 @@
   <typedef name="filelist" classname="org.apache.tools.ant.types.FileList"/>
   <typedef name="patternset" classname="org.apache.tools.ant.types.PatternSet"/>
   <typedef name="mapper" classname="org.apache.tools.ant.types.Mapper"/>
+  <typedef name="filterchain" classname="org.apache.tools.ant.types.FilterChain"/>
+  <typedef name="filterreader" classname="org.apache.tools.ant.types.AntFilterReader"/>
   <typedef name="filterset" classname="org.apache.tools.ant.types.FilterSet"/>
   <typedef name="description" classname="org.apache.tools.ant.types.Description"/>
   <typedef name="classfileset" classname="org.apache.tools.ant.types.optional.depend.ClassfileSet"/>
   <typedef name="substitution" classname="org.apache.tools.ant.types.Substitution"/>
+  <typedef name="regexp" classname="org.apache.tools.ant.types.RegularExpression"/>
   <typedef name="regularexpression" classname="org.apache.tools.ant.types.RegularExpression"/>
+  <typedef name="xmlcatalog" classname="org.apache.tools.ant.types.XMLCatalog"/>
 </antlib>
diff --git a/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/AntBase.java b/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/AntBase.java
index 98deea86d..760bc3595 100644
--- a/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/AntBase.java
+++ b/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/AntBase.java
@@ -53,14 +53,8 @@
  */
 package org.apache.ant.antlib.system;
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import org.apache.ant.common.antlib.AbstractComponent;
-import org.apache.ant.common.antlib.AbstractTask;
-import org.apache.ant.common.antlib.AntContext;
-import org.apache.ant.common.service.DataService;
-import org.apache.ant.common.service.ExecService;
 import org.apache.ant.common.util.ExecutionException;
 
 /**
@@ -69,154 +63,8 @@ import org.apache.ant.common.util.ExecutionException;
  * @author Conor MacNeill
  * @created 4 February 2002
  */
-public abstract class AntBase extends AbstractTask {
+public abstract class AntBase extends SubBuild {
 
-    /**
-     * Simple Property value storing class
-     *
-     * @author Conor MacNeill
-     * @created 5 February 2002
-     */
-    public static class Property extends AbstractComponent {
-        /** The property name */
-        private String name;
-
-        /** The property value */
-        private String value;
-
-
-        /**
-         * Gets the name of the Property
-         *
-         * @return the name value
-         */
-        public String getName() {
-            return name;
-        }
-
-
-        /**
-         * Gets the value of the Property
-         *
-         * @return the value value
-         */
-        public String getValue() {
-            return value;
-        }
-
-
-        /**
-         * Sets the name of the Property
-         *
-         * @param name the new name value
-         */
-        public void setName(String name) {
-            this.name = name;
-        }
-
-
-        /**
-         * Sets the value of the Property
-         *
-         * @param value the new value value
-         */
-        public void setValue(String value) {
-            this.value = value;
-        }
-
-
-        /**
-         * Validate this data type instance
-         *
-         * @exception ExecutionException if either attribute has not been set
-         */
-        public void validateComponent() throws ExecutionException {
-            if (name == null) {
-                throw new ExecutionException("\"name\" attribute of "
-                     + "<property> must be supplied");
-            }
-            if (value == null) {
-                throw new ExecutionException("\"value\" attribute of "
-                     + "<property> must be supplied");
-            }
-        }
-    }
-
-
-    /**
-     * A simple class to store information about references being passed
-     *
-     * @author Conor MacNeill
-     * @created 5 February 2002
-     */
-    public static class Reference extends AbstractComponent {
-        /** The id of the reference to be passed */
-        private String refId;
-        /** The id to be used in the sub-build for this reference */
-        private String toId;
-
-
-        /**
-         * Gets the refId of the Reference
-         *
-         * @return the refId value
-         */
-        public String getRefId() {
-            return refId;
-        }
-
-
-        /**
-         * Gets the toId of the Reference
-         *
-         * @return the toId value
-         */
-        public String getToId() {
-            return toId;
-        }
-
-
-        /**
-         * Sets the refId of the Reference
-         *
-         * @param refId the new refId value
-         */
-        public void setRefId(String refId) {
-            this.refId = refId;
-        }
-
-
-        /**
-         * Sets the toId of the Reference
-         *
-         * @param toId the new toId value
-         */
-        public void setToId(String toId) {
-            this.toId = toId;
-        }
-
-
-        /**
-         * Validate this data type instance
-         *
-         * @exception ExecutionException if the refid attribute has not been
-         *      set
-         */
-        public void validateComponent() throws ExecutionException {
-            if (refId == null) {
-                throw new ExecutionException("\"refid\" attribute of "
-                     + "<reference> must be supplied");
-            }
-        }
-    }
-
-
-    /** The core's data service for manipulating the properties */
-    private DataService dataService;
-
-    /** The core's ExecutionService for running builds and external programs */
-    private ExecService execService;
-    
     /**
      * flag which indicates if all current properties should be passed to the
      * subbuild
@@ -229,9 +77,6 @@ public abstract class AntBase extends AbstractTask {
      */
     private boolean inheritRefs = false;
 
-    /** The properties which will be passed to the sub-build */
-    private Map properties = new HashMap();
-
     /**
      * The key to the subbuild with which the Ant task can manage the subbuild
      */
@@ -240,51 +85,6 @@ public abstract class AntBase extends AbstractTask {
     /** The name of the target to be evaluated in the sub-build */
     private String targetName;
 
-
-    /**
-     * Add a property to be passed to the subbuild
-     *
-     * @param property descriptor for the property to be passed
-     */
-    public void addProperty(Property property) {
-        properties.put(property.getName(), property.getValue());
-    }
-
-
-    /**
-     * Add a reference to be passed
-     *
-     * @param reference the descriptor of the reference to be passed
-     * @exception ExecutionException if the reference does not reference a
-     *      valid object
-     */
-    public void addReference(Reference reference) throws ExecutionException {
-        String refId = reference.getRefId();
-
-        if (!dataService.isDataValueSet(refId)) {
-            throw new ExecutionException("RefId \"" + refId + "\" is not set");
-        }
-        Object value = dataService.getDataValue(refId);
-        String toId = reference.getToId();
-
-        if (toId == null) {
-            toId = refId;
-        }
-
-        properties.put(toId, value);
-    }
-
-
-    /**
-     * Get the core's execution service
-     *
-     * @return the core's execution service.
-     */
-    protected ExecService getExecService() {
-        return execService;
-    }
-
-
     /**
      * Get the properties to be used with the sub-build
      *
@@ -292,13 +92,13 @@ public abstract class AntBase extends AbstractTask {
      */
     protected Map getProperties() {
         if (!inheritAll) {
-            return properties;
+            return super.getProperties();
         }
 
         // need to combine existing properties with new ones
-        Map subBuildProperties = dataService.getAllProperties();
+        Map subBuildProperties = getDataService().getAllProperties();
 
-        subBuildProperties.putAll(properties);
+        subBuildProperties.putAll(super.getProperties());
         return subBuildProperties;
     }
 
@@ -331,7 +131,7 @@ public abstract class AntBase extends AbstractTask {
         if (subbuildKey == null) {
             super.handleSystemErr(line);
         } else {
-            execService.handleBuildOutput(subbuildKey, line, true);
+            getExecService().handleBuildOutput(subbuildKey, line, true);
         }
     }
 
@@ -349,28 +149,11 @@ public abstract class AntBase extends AbstractTask {
         if (subbuildKey == null) {
             super.handleSystemOut(line);
         } else {
-            execService.handleBuildOutput(subbuildKey, line, false);
+            getExecService().handleBuildOutput(subbuildKey, line, false);
         }
     }
 
 
-    /**
-     * Initialise this task
-     *
-     * @param context core's context
-     * @param componentType the component type of this component (i.e its
-     *      defined name in the build file)
-     * @exception ExecutionException if we can't access the data service
-     */
-    public void init(AntContext context, String componentType)
-         throws ExecutionException {
-        super.init(context, componentType);
-        dataService = (DataService) getCoreService(DataService.class);
-        execService = (ExecService) getCoreService(ExecService.class);
-
-    }
-
-
     /**
      * Indicate if all properties should be passed
      *
@@ -392,17 +175,6 @@ public abstract class AntBase extends AbstractTask {
     }
 
 
-    /**
-     * Set a property for the subbuild
-     *
-     * @param propertyName the property name
-     * @param propertyValue the value of the property
-     */
-    protected void setProperty(String propertyName, Object propertyValue) {
-        properties.put(propertyName, propertyValue);
-    }
-
-
     /**
      * Set the key of the subbuild
      *
diff --git a/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/LibPath.java b/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/LibPath.java
index b8704d2e0..bbd54737f 100644
--- a/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/LibPath.java
+++ b/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/LibPath.java
@@ -60,6 +60,7 @@ import org.apache.ant.common.antlib.AbstractTask;
 import org.apache.ant.common.antlib.AntContext;
 import org.apache.ant.common.service.ComponentService;
 import org.apache.ant.common.util.ExecutionException;
+import org.apache.ant.common.event.MessageLevel;
 import org.apache.ant.init.InitUtils;
 
 /**
@@ -153,6 +154,8 @@ public class LibPath extends AbstractTask {
         AntContext context = getAntContext();
         ComponentService componentService = (ComponentService)
             context.getCoreService(ComponentService.class);
+        log("Adding lib path " + url + " for " + libraryId, 
+            MessageLevel.MSG_DEBUG);    
         componentService.addLibPath(libraryId, url);
     }
 
diff --git a/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/SubBuild.java b/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/SubBuild.java
new file mode 100644
index 000000000..a446f808e
--- /dev/null
+++ b/proposal/mutant/src/java/antlibs/system/org/apache/ant/antlib/system/SubBuild.java
@@ -0,0 +1,313 @@
+/*
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2002 The Apache Software Foundation.  All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution, if
+ *    any, must include the following acknowlegement:
+ *       "This product includes software developed by the
+ *        Apache Software Foundation (http://www.apache.org/)."
+ *    Alternately, this acknowlegement may appear in the software itself,
+ *    if and wherever such third-party acknowlegements normally appear.
+ *
+ * 4. The names "The Jakarta Project", "Ant", and "Apache Software
+ *    Foundation" must not be used to endorse or promote products derived
+ *    from this software without prior written permission. For written
+ *    permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache"
+ *    nor may "Apache" appear in their names without prior written
+ *    permission of the Apache Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation.  For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ */
+package org.apache.ant.antlib.system;
+import java.util.HashMap;
+import java.util.Map;
+import org.apache.ant.common.antlib.AbstractComponent;
+import org.apache.ant.common.antlib.AbstractTask;
+import org.apache.ant.common.antlib.AntContext;
+import org.apache.ant.common.service.DataService;
+import org.apache.ant.common.service.ExecService;
+import org.apache.ant.common.util.ExecutionException;
+
+/**
+ * Common Base class all tasks that can pass references and property overrides
+ * to a subbuild
+ *
+ * @author Conor MacNeill
+ * @created 22 April 2002
+ */
+public abstract class SubBuild extends AbstractTask {
+
+    /**
+     * Simple Property value storing class
+     *
+     * @author Conor MacNeill
+     * @created 5 February 2002
+     */
+    public static class Property extends AbstractComponent {
+        /** The property name */
+        private String name;
+
+        /** The property value */
+        private String value;
+
+
+        /**
+         * Gets the name of the Property
+         *
+         * @return the name value
+         */
+        public String getName() {
+            return name;
+        }
+
+
+        /**
+         * Gets the value of the Property
+         *
+         * @return the value value
+         */
+        public String getValue() {
+            return value;
+        }
+
+
+        /**
+         * Sets the name of the Property
+         *
+         * @param name the new name value
+         */
+        public void setName(String name) {
+            this.name = name;
+        }
+
+
+        /**
+         * Sets the value of the Property
+         *
+         * @param value the new value value
+         */
+        public void setValue(String value) {
+            this.value = value;
+        }
+
+
+        /**
+         * Validate this data type instance
+         *
+         * @exception ExecutionException if either attribute has not been set
+         */
+        public void validateComponent() throws ExecutionException {
+            if (name == null) {
+                throw new ExecutionException("\"name\" attribute of "
+                     + "<property> must be supplied");
+            }
+            if (value == null) {
+                throw new ExecutionException("\"value\" attribute of "
+                     + "<property> must be supplied");
+            }
+        }
+    }
+
+
+    /**
+     * A simple class to store information about references being passed
+     *
+     * @author Conor MacNeill
+     * @created 5 February 2002
+     */
+    public static class Reference extends AbstractComponent {
+        /** The id of the reference to be passed */
+        private String refId;
+        /** The id to be used in the sub-build for this reference */
+        private String toId;
+
+
+        /**
+         * Gets the refId of the Reference
+         *
+         * @return the refId value
+         */
+        public String getRefId() {
+            return refId;
+        }
+
+
+        /**
+         * Gets the toId of the Reference
+         *
+         * @return the toId value
+         */
+        public String getToId() {
+            return toId;
+        }
+
+
+        /**
+         * Sets the refId of the Reference
+         *
+         * @param refId the new refId value
+         */
+        public void setRefId(String refId) {
+            this.refId = refId;
+        }
+
+
+        /**
+         * Sets the toId of the Reference
+         *
+         * @param toId the new toId value
+         */
+        public void setToId(String toId) {
+            this.toId = toId;
+        }
+
+
+        /**
+         * Validate this data type instance
+         *
+         * @exception ExecutionException if the refid attribute has not been
+         *      set
+         */
+        public void validateComponent() throws ExecutionException {
+            if (refId == null) {
+                throw new ExecutionException("\"refid\" attribute of "
+                     + "<reference> must be supplied");
+            }
+        }
+    }
+
+
+    /** The core's data service for manipulating the properties */
+    private DataService dataService;
+
+    /** The core's ExecutionService for running builds and external programs */
+    private ExecService execService;
+
+    /** The properties which will be passed to the sub-build */
+    private Map properties = new HashMap();
+
+
+    /**
+     * Add a property to be passed to the subbuild
+     *
+     * @param property descriptor for the property to be passed
+     */
+    public void addProperty(Property property) {
+        properties.put(property.getName(), property.getValue());
+    }
+
+
+    /**
+     * Add a reference to be passed
+     *
+     * @param reference the descriptor of the reference to be passed
+     * @exception ExecutionException if the reference does not reference a
+     *      valid object
+     */
+    public void addReference(Reference reference) throws ExecutionException {
+        String refId = reference.getRefId();
+
+        if (!dataService.isDataValueSet(refId)) {
+            throw new ExecutionException("RefId \"" + refId + "\" is not set");
+        }
+        Object value = dataService.getDataValue(refId);
+        String toId = reference.getToId();
+
+        if (toId == null) {
+            toId = refId;
+        }
+
+        properties.put(toId, value);
+    }
+
+
+    /**
+     * Get the core's execution service
+     *
+     * @return the core's execution service.
+     */
+    protected ExecService getExecService() {
+        return execService;
+    }
+
+
+    /**
+     * Get the core's date service
+     *
+     * @return the core's data service.
+     */
+    protected DataService getDataService() {
+        return dataService;
+    }
+
+
+    /**
+     * Get the properties to be used with the sub-build
+     *
+     * @return the properties the sub-build will start with
+     */
+    protected Map getProperties() {
+        return properties;
+    }
+
+
+    /**
+     * Initialise this task
+     *
+     * @param context core's context
+     * @param componentType the component type of this component (i.e its
+     *      defined name in the build file)
+     * @exception ExecutionException if we can't access the data service
+     */
+    public void init(AntContext context, String componentType)
+         throws ExecutionException {
+        super.init(context, componentType);
+        dataService = (DataService) getCoreService(DataService.class);
+        execService = (ExecService) getCoreService(ExecService.class);
+    }
+
+
+    /**
+     * Set a property for the subbuild
+     *
+     * @param propertyName the property name
+     * @param propertyValue the value of the property
+     */
+    protected void setProperty(String propertyName, Object propertyValue) {
+        properties.put(propertyName, propertyValue);
+    }
+}
+
diff --git a/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/Ant1CompatBuilder.java b/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/Ant1CompatBuilder.java
index e38018420..4d73a07a6 100644
--- a/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/Ant1CompatBuilder.java
+++ b/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/Ant1CompatBuilder.java
@@ -25,7 +25,7 @@ public class Ant1CompatBuilder {
                         "${lib.dir}/ant1compat", "*.jar");
         helper.addPathElementToPath("classpath", "${distlib.dir}/init.jar");
         helper.addPathElementToPath("classpath", "${distlib.dir}/common/common.jar");
-        helper.addPathElementToPath("classpath", "${distlib.dir}/antlibs/system.jar");
+        helper.addPathElementToPath("classpath", "${distlib.dir}/syslibs/system.jar");
     }
     protected void check_for_optional_packages(BuildHelper helper) {
     }
@@ -36,6 +36,7 @@ public class Ant1CompatBuilder {
         helper.javac("${bin.dir}/ant1src_copy:${java.dir}/antlibs/ant1compat", "${bin.dir}/ant1compat", "classpath");
         helper.copyFileset("${bin.dir}/ant1src_copy", "${bin.dir}/ant1compat");
         helper.copyFileset("${ant1etc.dir}", "${bin.dir}/ant1compat/${optional.package}/junit/xsl");
+        helper.mkdir("${distlib.dir}/antlibs/");
         helper.jar("${bin.dir}/ant1compat", "${distlib.dir}/antlibs/ant1compat.jar",
                    "${java.dir}/antlibs/ant1compat", "antlib.xml", null, null);
     }
diff --git a/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/Builder.java b/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/Builder.java
index d85f32487..f8a617f7c 100644
--- a/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/Builder.java
+++ b/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/Builder.java
@@ -209,12 +209,7 @@ public class Builder {
         mutantBuilder.antcore(mainBuild);
         mutantBuilder.start(mainBuild);
         mutantBuilder.frontend(mainBuild);
-
-        BuildHelper systemBuild = new BuildHelper();
-        systemBuild.setProperty("libset", "system");
-        systemBuild.setProperty("dist.dir", "bootstrap");
-        mutantBuilder._init(systemBuild);
-        mutantBuilder.build_lib(systemBuild);
+        mutantBuilder.systemlib(mainBuild);
 
         Ant1CompatBuilder ant1Builder = new Ant1CompatBuilder();
         BuildHelper ant1Build = new BuildHelper();
diff --git a/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/MutantBuilder.java b/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/MutantBuilder.java
index e8a710da4..c7b2a7792 100644
--- a/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/MutantBuilder.java
+++ b/proposal/mutant/src/java/bootstrap/org/apache/ant/builder/MutantBuilder.java
@@ -78,15 +78,15 @@ public class MutantBuilder {
     }
     protected void antlibs(BuildHelper helper) {
     }
-    protected void build_lib(BuildHelper helper) {
-        helper.mkdir("${bin.dir}/antlibs/${libset}");
-        helper.mkdir("${distlib.dir}/antlibs");
+    protected void systemlib(BuildHelper helper) {
+        helper.mkdir("${bin.dir}/antlibs/system");
+        helper.mkdir("${distlib.dir}/syslibs");
         helper.createPath("classpath.antlibs");
         helper.addPathElementToPath("classpath.antlibs", "${distlib.dir}/common/common.jar");
         helper.addPathToPath("classpath.antlibs", "classpath.common");
-        helper.javac("${java.dir}/antlibs/${libset}", "${bin.dir}/antlibs/${libset}", "classpath.antlibs");
-        helper.jar("${bin.dir}/antlibs/${libset}", "${distlib.dir}/antlibs/${libset}.jar",
-                   "${java.dir}/antlibs/${libset}", "antlib.xml", null, null);
+        helper.javac("${java.dir}/antlibs/system", "${bin.dir}/antlibs/system", "classpath.antlibs");
+        helper.jar("${bin.dir}/antlibs/system", "${distlib.dir}/syslibs/system.jar",
+                   "${java.dir}/antlibs/system", "antlib.xml", null, null);
     }
     protected void main(BuildHelper helper) {
     }
diff --git a/proposal/mutant/src/java/init/org/apache/ant/init/LoaderUtils.java b/proposal/mutant/src/java/init/org/apache/ant/init/LoaderUtils.java
index 00bdc4be8..fc5b7a240 100755
--- a/proposal/mutant/src/java/init/org/apache/ant/init/LoaderUtils.java
+++ b/proposal/mutant/src/java/init/org/apache/ant/init/LoaderUtils.java
@@ -240,6 +240,7 @@ public class LoaderUtils {
         }
 
         if (!location.isDirectory()) {
+            urls = new URL[1];
             String path = location.getPath();
             for (int i = 0; i < extensions.length; ++i) {
                 if (path.endsWith(extensions[i])) {