8171886: Miscellaneous changes imported from jsr166 CVS 2017-02
Reviewed-by: martin, psandoz

7058828: test/java/util/concurrent/Phaser/Arrive.java fails intermittently
Reviewed-by: chegar

7034657: Update Creative Commons license URL in legal notices
Reviewed-by: chegar

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

6865582: jsr166y - jsr166 maintenance update
6865571: Add a lightweight task framework known as ForkJoin
6445158: Phaser - an improved CyclicBarrier
6865579: Add TransferQueue/LinkedTransferQueue
Reviewed-by: martin, chegar, dice