Review request for MACOSX_PORT-686: Regression in drawing (Not running on AppKit thread 0...)

[Dmitry Cherepanov]

Hello,

Please review a temporary fix for 
http://java.net/jira/browse/MACOSX_PORT-686 at

http://cr.openjdk.java.net/~dcherepanov/7124263/webrev.0/

The fix ensures that -drawInCGLContext: and -dealloc is called on the 
main thread  (the fix is needed for the plugin and it's contributed by 
Scott Kovatch). It's still unclear why -drawInCGLContext: isn't called 
on the main thread and the change is suggested as a temporary workaround.

Also, the patch includes some cleanup - it eliminates the code that 
manages JNI global ref and starts using JNFJObjectWrapper.

Thanks,
Dmitry