[8] Request for review: 8009012 [macosx] DisplayChangedListener is not implemented in LWWindowPeer/CGraphicsEnvironment

[Sergey Bylokhov]

Hello,
Please review the fix for jdk 8.
displayChanged() was added to LWWindowPeer and CGraphicsDevice. Note 
that I move out unnecessary calls to the appkit thread(in 
CGLayer.nativeSetScale() and CGraphicsDevice.getX), because it can cause 
a deadlock, when called from the non-appkit thread.

Bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8009012
Webrev can be found at: http://cr.openjdk.java.net/~serb/8009012/webrev.00

-- 
Best regards, Sergey.