[8] Request for review: 8004866 [macosx] HiDPI support in Aqua L&F

[Sergey Bylokhov]

Hello,
Please review the fix for jdk 8. Change adds support of hidpi to Aqua l&f.
Change description:
- AquaPainter takes into account scale, when creates image.
- ImageCache now use scale factor as a key.
- CGContext also scaled to a ratio of image/control width/height
- Cleanup

Note that this fix depends from the:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8000629

Bug: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8004866
Webrev can be found at: http://cr.openjdk.java.net/~serb/8004866/webrev.00

-- 
Best regards, Sergey.