[8] Review request for 8030118: Document listeners fired outside document lock

[sergey malenkov]

Hello,

Could you please review the following fix:
fix:http://cr.openjdk.java.net/~malenkov/8030118.9.0/
bug:https://bugs.openjdk.java.net/browse/JDK-8030118
We must revert the 7146146 fix that contradicts the specification: "The 
code path for any DocumentListener implementation and any UndoListener 
implementation must be threadsafe, and not access the component lock if 
trying to be safe from deadlocks".

Thanks,
SAM