[8] Request for review: 8000629 [macosx] Blurry rendering with Java 7 on Retina display

[Sergey Bylokhov]

Hello,
Please review the fix for jdk 8.
Change adds initial support of hidpi(mostly on 2d side). In the fix 
scale was added to the surface data/CGraphicsDevice /CGLLayer. This 
scale factor maps virtual coordinates to physical pixels.
This change doesn't add support of hidpi to aqua l&f and doesn't add 
support of dynamic change of scale factor.

Bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8000629
Webrev can be found at: http://cr.openjdk.java.net/~serb/8000629/webrev.06

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Best regards, Sergey.