defined a system property to remove MAVEN_OPTS from Maven builds forked inside.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@34044 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/Main.java

@@ -183,6 +183,11 @@ public class Main {
      */
     public static boolean isUnitTest = false;
 
+    /**
+     * Set to true if we are running inside "mvn hpi:run" or "mvn hudson-dev:run"
+     */
+    public static boolean isDevelopmentMode = Boolean.getBoolean(Main.class.getName()+".development");
+
     /**
      * Time out for socket connection to Hudson.
      */