allow derived classes to do something when the owner is set.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@3760 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/model/JobProperty.java

@@ -29,7 +29,7 @@ public abstract class JobProperty<J extends Job<?,?>> implements Describable<Job
      */
     protected transient J owner;
 
-    /*package*/ void setOwner(J owner) {
+    protected void setOwner(J owner) {
         this.owner = owner;
     }