add pack200 to promote script

releng.control/process-artifacts.xml

 <project
     default="processArtifacts"
     basedir=".">
-    <target
-        name="processArtifacts">
+    <target name="processArtifacts">
 
     	 <!-- normally, caller would set repoDirLocation, but for local operation, can hard code here -->
         <property
@@ -13,8 +12,7 @@
             repositoryPath="file:/${repoDirLocation}"/>
 
         <!-- clean up some unnecessary files -->
-        <delete
-            failonerror="false">
+        <delete failonerror="false">
             <fileset
                 dir="${repoDirLocation}"
                 includes="artifacts.jar.pack.gz, content.jar.pack.gz, site.xml"/>