Patch for review - fixes hangs when VoiceOver is active

[Pete Brunet]

The attached patch was created by Kevin Miller, reviewed by Mike
Swingler, and tested by me.

This patch will fix the following bugs:
http://java.net/jira/browse/MACOSX_PORT-630
http://java.net/jira/browse/MACOSX_PORT-644
http://java.net/jira/browse/MACOSX_PORT-646

It also includes a fix to a bug in an NSLog that I noticed when doing
some other debugging.

Please review.

Also, is there any information missing or something else I should have
done in the process of creating the patch?

Pete