jsr166 jdk integration 2017-12-08

webrev 8193174: SubmissionPublisher invokes the Subscriber's onComplete before all of its submitted items have been published
webrev 8192943: Optimize atomic accumulators using VarHandle getAndSet
webrev 8192944: Miscellaneous changes imported from jsr166 CVS 2017-12-08

Consolidated hg status
Consolidated hg diff -wbB (ignoring whitespace changes)
Consolidated hg diff
Mercurial Queues patches directory