fix warning in ant build

build.xml

@@ -16,7 +16,7 @@
 
 	<target name="compile">
 		<mkdir dir="${classes.dir}" />
-		<javac srcdir="${src.dir}" destdir="${classes.dir}" />
+		<javac includeantruntime="false" srcdir="${src.dir}" destdir="${classes.dir}" />
 		<copy todir="${classes.dir}">
 			<fileset dir="${src.dir}" excludes="**/*.java"/>
 		</copy>