[7u6] Request for approval: 7124210: [macosx] Replacing text in a TextField does generate an extra TextEvent

[Alexander Potochkin]

Requesting approval to commit fix for CR 7124210.

http://cr.openjdk.java.net/~alexp/7124210/webrev.00/

Reviewed by Sergey Bylokhov
http://mail.openjdk.java.net/pipermail/macosx-port-dev/2012-April/003979.html

the bug's description is here:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7124210

This bug breaks our regression test on MacOS,
it has already been fixed in JDK8.

Thanks
alexp