- add sn cleanup to sdk build

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@8414 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

build.xml

@@ -232,11 +232,17 @@
     <!--reverts svn changes (in case the revision numbers haven't been reset-->
     <target name="-revert-svn-changes">
         <!--remove changes from jMP (old version numbers)-->
+        <exec executable="svn" dir=".">
+            <arg value="cleanup" />
+        </exec>
         <exec executable="svn" dir=".">
             <arg value="revert" />
             <arg value="." />
             <arg value="-R" />
         </exec>
+        <exec executable="svn" dir=".">
+            <arg value="cleanup" />
+        </exec>
         <!--update gde svn revision-->
         <exec executable="svn" dir=".">
             <arg value="update" />