8171886: Miscellaneous changes imported from jsr166 CVS 2017-02Reviewed-by: martin, psandoz
8142441: Improve jtreg tests for java.util.concurrentReviewed-by: martin, psandoz, chegar, shade, plevart
6962318: Update copyright yearReviewed-by: xdono
7003745: Code style cleanups (sync from Dougs CVS)Reviewed-by: chegar, dholmes
6943119: Rebrand source copyright noticesReviewed-by: darcy, weijun
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