Explicitly set "includeantruntime" to "false" to silence an Ant warning

For details see:
http://stackoverflow.com/questions/5103384/ant-warning-includeantruntime-was-not-set

build.xml

@@ -25,7 +25,7 @@
     </target>
 
     <target name="compile" depends="-init">
-        <javac target="1.5" source="1.5" debug="true" destdir="${classes.dir}" classpath="${android.jar}">
+        <javac target="1.5" source="1.5" debug="true" destdir="${classes.dir}" classpath="${android.jar}" includeantruntime="false">
             <src path="${source.dir}"/>
         </javac>
     </target>