8159690: [TESTBUG] Mark headful tests with @key headful.
Reviewed-by: simonis, alexsch

8063102: Change open awt regression tests to avoid sun.awt.SunToolkit.realSync, part 1
Reviewed-by: pchelko, serb

8041490: PIT: [macosx] Crash in system tray functionality check test
Reviewed-by: anthony, serb