Permit building under JDK 1.5

PR: 28996
Obtained from: Jesse Glick


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@276460 13f79535-47bb-0310-9956-ffa450edef68

build.xml

@@ -48,7 +48,8 @@
   <property name="chmod.maxparallel" value="250"/>
   <property name="deprecation" value="false"/>
   <property name="optimize" value="true"/>
-  <property name="javac.target" value="1.1"/>
+  <property name="javac.target" value="1.2"/>
+  <property name="javac.source" value="1.2"/>
   <property name="junit.fork" value="false"/>
   <property name="junit.filtertrace" value="off"/>
   <property name="junit.summary" value="no"/>
@@ -604,6 +605,7 @@
            debug="${debug}"
            deprecation="${deprecation}"
            target="${javac.target}"
+           source="${javac.source}"
            optimize="${optimize}" >
       <classpath refid="classpath"/>
 
@@ -1354,6 +1356,7 @@
            destdir="${build.tests}"
            debug="${debug}"
            target="${javac.target}"
+           source="${javac.source}"
            deprecation="${deprecation}" >
       <classpath refid="tests-classpath"/>
 
@@ -1610,4 +1613,4 @@
           description="--> creates a minimum distribution in ./dist"
           depends="dist-lite"/>
 
-</project>
+</project>