Review request for 7124387: [macosx] Application freezes on dispose window, created by JFileChooser

[Alexander Potochkin]

Hello

Please review the following fix:
http://cr.openjdk.java.net/~alexp/7124387/webrev.00/

the bug's description is here:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7124387

on MacOS it takes more time for the test to warm,
so the 10 seconds timeout is not enough.

I removed the internal timeout check
         if (!MUX.await(10, TimeUnit.SECONDS)) {
             throw new RuntimeException("Timeout");
         }
and rely on the default jtreg's timeout.

Thanks
alexp