Request for review: 7124524 - OutOfMemory exception after (or even before) some 2500 creations of LWWindowPeer

[Sergey Bylokhov]

Hi Everyone,
This is a fix for 4 memory leaks.
1. LWWindowPeer does not destroy backbuffer in disposeImpl().
2. LWToolkit stores unused links to Peer.
3. Local references were not deleted in the AWTWindow.m, but according 
JNFJObjectWrapper.jObjectWithEnv documentation "returns a new local-ref, 
must be released with DeleteLocalRef".
4. OGLContext in some cases can cache CGLSurfaceData in this case our 
LWWindowPeer was not collected.

Bug: http://monaco.us.oracle.com/detail.jsf?cr=7124524
Webrev can be found at: http://cr.openjdk.java.net/~serb/7124524/webrev.00/

-- 
Best regards, Sergey.