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

8076468: Add @modules to tests in jdk_desktop test group
Reviewed-by: yan, alexsch

6943119: Rebrand source copyright notices
Reviewed-by: darcy, weijun

6845805: Test for CR 6713352 is failed under Linux
Reviewed-by: malenkov

6713352: Deadlock in JFileChooser with synchronized custom FileSystemView
Reviewed-by: malenkov, peterz