Request for phase 2 approval for CR 7124262 - [macosx] Drag events go to a wrong child.

[Alexander Zuev]

Bug: http://bugs.sun.com/view_bug.do?bug_id=7124262
Webrev: http://cr.openjdk.java.net/~kizune/7124262/webrev.02/
Review thread: 
http://mail.openjdk.java.net/pipermail/macosx-port-dev/2012-February/003293.html
Reviewers: Alexander Potochkin (alexp), Sergey Bylokhov (serb)

Rationale for inclusion into 7u4: The major functionality without this 
fix is not working,
it is currently not possible to use Drag and Drop functionality in any 
application that has at least one AWT element
in the active window. The fix is considered low-risk since only 
MacOS-specific files were modified and no
cross-platform functionality is affected.

With best regards,
Alexander Zuev