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

8023475: [TEST BUG] Test javax/swing/JSlider/6794831/bug6794831.java does not wait long enough for test results
Reviewed-by: anthony, pchelko

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

6794831: Infinite loop while painting ticks on Slider with maximum=MAX_INT
Reviewed-by: malenkov