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

8075314: All the InternalFrames will be maximized after maximizing only one of the InternalFrame with WindowsLookAndFeel
Reviewed-by: serb, alexsch