8183124: Remove OopsInHeapRegionClosure
Reviewed-by: sjohanss, tschatzl

8175554: Improve G1UpdateRSOrPushRefClosure
Summary: Micro-optimizations and improving naming for the G1UpdateRSOrPushRefClosure
Reviewed-by: ehelin, sangheki

8144505: Change G1ParCopyHelper to inherit OopClosure
Reviewed-by: mgerdin, stefank

8139200: Eliminate G1ParClosureSuper::_worker_id
Summary: Moved _worker_id from G1ParClosureSuper to G1ParCopyHelper.
Reviewed-by: mgerdin, tschatzl

8138762: Refactor setup of evacuation closures in G1
Summary: Introduce policy class containing the root scan closures.
Reviewed-by: ehelin, stefank

8080775: Better argument formatting for assert() and friends
Reviewed-by: kbarrett, pliden

8040162: Avoid reallocating PLABs between GC phases in G1
Summary: Allocate G1ParScanThreadState at the start of GC and only deallocate at the end of GC. This automatically keeps the current PLAB intact without flushing it (and loosing lots of memory) for every reallocation.
Reviewed-by: david, mgerdin

8133047: Rename G1ParScanThreadState::_queue_num to _worker_id
Reviewed-by: jmasa, jwilhelm

8081382: Make flags ParallelGCThreads and ConcGCThreads of type uint
Reviewed-by: drwhite, stefank

8080876: Replace unnecessary MAX2(ParallelGCThreads, 1) calls with ParallelGCThreads
Reviewed-by: kbarrett, mgerdin

8079792: GC directory structure cleanup
Reviewed-by: brutisso, stefank, david