[7u] Review Request for JDK-8006634 Unify LWCToolkit.invokeAndWait() and sun.awt.datatransfer.ToolkitThreadBlockedHandler

[Petr Pchelko]

Hello, AWT Team.

Please, review the back-port of the fix for JDK-8006634 to the JDK7u. I am sending it as a separate review request because the code changes are different in the patches.

The bug:
http://bugs.sun.com/view_bug.do?bug_id=8006634
The webrev for JDK7-u:
http://cr.openjdk.java.net/~pchelko/8006634/webrev.7u/
The original webrev for JDK-8
http://cr.openjdk.java.net/~pchelko/8006634/webrev.02/
The mailing thread:
http://mail.openjdk.java.net/pipermail/awt-dev/2013-February/004335.html

The idea of the fix stays the same. However the code changes are different, because it is affected by the fix for 7171163 made by Alexander Zuev. His fix was different for JDK8 and JDK7. (see LWCToolkit.m, LWCToolkit.java) However, after those fix the differences will be eliminated. 

With best regards. Petr.