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

8143577: optimize ArrayList.removeIf
8169679: ArrayList.subList().iterator().forEachRemaining() off-by-one-error
8167202: ArrayDeque improvements
8164793: new ArrayDeque(2**N) allocates backing array of size 2**(N+1)
8169739: LinkedBlockingDeque spliterator needs to support node self-linking
8169738: CopyOnWriteArrayList subList needs more synchronization
Reviewed-by: martin, smarks, psandoz, forax

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

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