8159690: [TESTBUG] Mark headful tests with @key headful.
Reviewed-by: simonis, alexsch

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

6848458: java/awt/GridLayout/LayoutExtraGaps/LayoutExtraGaps.java fails
Summary: consider gap between the component edge and container borders instead of just getX() and getY()
Reviewed-by: dav
Contributed-by: mwong@redhat.com

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