<AWT Dev> Review request for CR 2227234 - [macosx] Exception at java.awt.datatransfer on headless mode (only in GUI session)

[Petr Pchelko]

Hello, AWT Team.

Could you please review a fix for the following issue:
http://bugs.sun.com/view_bug.do?bug_id=2227234
The fix is available at:
http://cr.openjdk.java.net/~pchelko/2227234/webrev.00/
	
This is a partial forward port of the fix made by Alexander Zyev in jdk7. 
The original bug in 7 is:
http://bugs.sun.com/view_bug.do?bug_id=7184951
The original fix could be found at:
http://cr.openjdk.java.net/~kizune/7184951/webrev.00/

The changes in CToolkitThreadBlockedHandler are not needed after the fix for 
JDK-8006634 Unify LWCToolkit.invokeAndWait() and CToolkitThreadBlockedHandler

With best regards. Petr.