RFR: 8258508: Merge G1RedirtyCardsQueue into qset [v2]

[Kim Barrett]

> Please review this change to G1RedirtyCardsLocalQueueSet to directly
> incorporate the associated queue, simplifying usage.
> 
> Testing:
> mach5 tier1

Kim Barrett has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'master' into merge_redirty_queue
 - Merge branch 'master' into merge_redirty_queue
 - merge redirty cards queue into local qset

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/2325/files
  - new: https://git.openjdk.java.net/jdk/pull/2325/files/06057eb0..fbf891ba

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=2325&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=2325&range=00-01

  Stats: 4520 lines in 346 files changed: 2030 ins; 983 del; 1507 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2325.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2325/head:pull/2325

PR: https://git.openjdk.java.net/jdk/pull/2325