[7u6] Request for approval for CR 7177173: [macosx] JFrame.setExtendedState(JFrame.MAXIMIZED_BOTH) not working as expected in JDK 7

[Anthony Petrov]

Bug: http://bugs.sun.com/view_bug.do?bug_id=7177173
Webrev: http://cr.openjdk.java.net/~anthony/7u6-17-MaximizedBoth-7177173.0/

Review threads: 
http://mail.openjdk.java.net/pipermail/macosx-port-dev/2012-July/004596.html
http://mail.openjdk.java.net/pipermail/macosx-port-dev/2012-July/004585.html

Reviewers: Artem Ananiev, Sergey Bylokhov

Note: this is a 100% direct back-port of the same fix from JDK 8.

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best regards,
Anthony