<AWT Dev> [8] Review request: JDK-8024600 [macosx] code prevents use of -Xlint:auxiliaryclass, empty in jdk build

[Petr Pchelko]

Hello, AWT Team.

Please review the fix for the issue:
https://bugs.openjdk.java.net/browse/JDK-8024600
The fix is available at:
http://cr.openjdk.java.net/~pchelko/8024600/webrev.00/

The warnings were fixed. The only behavioural change is in the AquaMenuBarUI: previously the if result was ignored, 
but it's incorrect: we should return (0, 0) only if we succeeded in setting the screen menu bar, I suppose that semicolon was a typo.

With best regards. Petr.