Request for review 7154062: [macosx] Mouse cursor isn't updated in applets

[Dmitry Cherepanov]

http://cr.openjdk.java.net/~dcherepanov/7154062/webrev.0/

Here's a patch for the issue with cursor in applets. The cause of the 
issue is that -[NSCursor set] doesn't update cursor when application 
isn't the active application. The fix starts using new method 
-javaSetAllowsCursorSetInBackground: (introduced in the latest developer 
package) to allow cursor changes in applets.

Thanks,
Dmitry