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

8135176: Moving test from javax/swing/plaf/basic/BasicHTML/4960629 to test/javax/swing/plaf/basic/BasicHTML/4960629
Reviewed-by: azvegint, alexsch
Contributed-by: Shilpi Rastogi <shilpi.rastogi@oracle.com>