<AWT Dev> [8] Review request for 2228674: Fix failed for CR 7162144

[Oleg Pekhovskiy]

Hi all,

please review the fix
http://cr.openjdk.java.net/~bagiras/2228674.1/
for
https://bugs.openjdk.java.net/browse/JDK-2228674

The fix covers two scenarios:
1. User code calls EventDispatchThread.interrupt() and then 
EventDispatchThread.interrupted() which clears interrupted state and
EDT doesn't stop.

2. EventDispatchThread.interrupt() is called without clearing the 
interrupted state (e.g. invocation of AppContext.dispose()) that makes 
EDT terminate.

The other scenario, in which AppContext.dispose() is called from the 
thread other than EDT and after that EventDispatchThread.interrupted() 
is called from EDT preventing EDT from termination, is treated like an 
architecture bug.

Some dead code was also removed because detaching of EDT is always forced.

Thanks,
Oleg