RFR: 8229044: G1RedirtyCardsQueueSet should be local to a collection

[Kim Barrett]

Please review this change to the use of G1RedirtyCardsQueueSet.
Rather than a singleton instance in the G1CollectedHeap that is reused
by each collection pause, we now (stack) allocate one for use by the
current collection pause.

CR:
https://bugs.openjdk.java.net/browse/JDK-8229044

Webrev:
http://cr.openjdk.java.net/~kbarrett/8229044/open.00/

Testing:
mach5 tier1-5