RFR: jsr166 jdk9 integration wave 9

[Martin Buchholz]

Again, no spec changes, but larger than expected.

http://cr.openjdk.java.net/~martin/webrevs/openjdk9/jsr166-jdk9-integration/

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Joe and Amy may be interested in
http://cr.openjdk.java.net/~martin/webrevs/openjdk9/jsr166-jdk9-integration/test-stabilization/
where we rewrite flaky tests with new mechanisms that are hopefully less
flaky.

We have some footprint tests that try to catch memory leaks, using
reflective methods that the jigsaw folks might frown upon.  There seems to
be a need for module-privileged code for e.g. whitebox testing and running
a debugger. Perhaps these tests will be an example of code so privileged,
someday.  Or we could decide such tests are more trouble than they're worth
and simply discard them.