RFR: jsr166 jdk10 integration wave 5

Mon Nov 6 20:00:35 UTC 2017

The notable thing this time around is the embarrassing number of rare races
being fixed, all of which are second tries.  This time for sure!

There's a large number of boring changes to appease errorprone, notably
http://errorprone.info/bugpattern/RandomModInteger
http://errorprone.info/bugpattern/MixedArrayDimensions

http://cr.openjdk.java.net/~martin/webrevs/openjdk10/jsr166-integration/overview.html

8190747: ExecutorService/Invoke.java fails intermittently
8179314: CountedCompleterTest.testForkHelpQuiesce fails with expected:<21>
but was:<13>
8189387: ConcurrentLinkedDeque linearizability continued ...
8189764: Miscellaneous changes imported from jsr166 CVS 2017-11