8160974: [TESTBUG] Mark more headful tests with @key headful.
Reviewed-by: serb, simonis

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

6616792: five AWT focus regression tests should be fixed
Summary: Fixed/refactored the tests.
Reviewed-by: volk

6680135: A number of test/closed/java/awt/Focus/* tests should be opened
Summary: The tests moved from the closed repository.
Reviewed-by: son