8185500: [TESTBUG] Add keywords headful/printer in java/awt and javax tests.
Summary: Add new keyword 'printer'. Some minor test fixes to show headless exception. Add some @requires windows.
Reviewed-by: serb, mbaesken

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

8032078: [macosx] CPlatformWindow.setWindowState throws RuntimeException, if windowState=ICONIFIED|MAXIMIZED_BOTH
Reviewed-by: pchelko, serb