Make the description attribute of Task accesible to build files

(that's what it has been intended for I guess). Add the one for Target
to <anstructure>.


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@267972 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/IntrospectionHelper.java

@@ -125,8 +125,6 @@ public class IntrospectionHelper  {
                 (
                  (
                   "setLocation".equals(name) && org.apache.tools.ant.Location.class.equals(args[0])
-                  ) || ( 
-                   "setDescription".equals(name) && java.lang.String.class.equals(args[0])
                   ) || (
                    "setTaskType".equals(name) && java.lang.String.class.equals(args[0])
                   )

src/main/org/apache/tools/ant/taskdefs/AntStructure.java

@@ -175,11 +175,12 @@ public class AntStructure extends Task {
         out.println("");
 
         out.println("<!ATTLIST target");
-        out.println("          id      ID    #IMPLIED");
-        out.println("          name    CDATA #REQUIRED");
-        out.println("          if      CDATA #IMPLIED");
-        out.println("          unless  CDATA #IMPLIED");
-        out.println("          depends CDATA #IMPLIED>");
+        out.println("          id          ID    #IMPLIED");
+        out.println("          name        CDATA #REQUIRED");
+        out.println("          if          CDATA #IMPLIED");
+        out.println("          unless      CDATA #IMPLIED");
+        out.println("          depends     CDATA #IMPLIED");
+        out.println("          description CDATA #IMPLIED>");
         out.println("");
     }