Index: /trunk/build.xml
===================================================================
--- /trunk/build.xml	(revision 5322)
+++ /trunk/build.xml	(revision 5323)
@@ -108,5 +108,8 @@
         </zip>
     </target>
-    <target name="javacc">
+    <uptodate property="javacc.notRequired" targetfile="${mapcss.dir}/parsergen/MapCSSParser.java" >
+        <srcfiles dir="${mapcss.dir}" includes="MapCSSParser.jj"/>
+    </uptodate>
+    <target name="javacc" unless="javacc.notRequired">
         <mkdir dir="${mapcss.dir}/parsergen"/>
         <exec append="false" executable="java" failifexecutionfails="true">
@@ -329,4 +332,12 @@
       </findbugs>
     </target>
+    <target name="run" depends="dist">
+        <java jar="dist/josm-custom.jar" fork="true">
+            <arg value="--set=expert=true"/>
+            <arg value="--set=remotecontrol.enabled=true"/>
+            <arg value="--set=debug.edt-checker.enable=false"/>
+            <jvmarg value="-Djosm.home=/tmp/.josm/"/>
+        </java>
+    </target>
 
 </project>