[9] Review Request: 8037096 [macosx] Refactor native menu code

[Petr Pchelko]

Hello, AWT Team.

Please review the fix for the issue: 
https://bugs.openjdk.java.net/browse/JDK-8037096
The fix is available at: http://cr.openjdk.java.net/~pchelko/9/8037096/webrev/

We've used a pattern with passing the parameters using an MutableArray, but 
this array leaked.
Now it doesn't.

With best regards. Petr.