8183128: Update RefineCardTableEntryClosure
Summary: Improve names and placement of RefineCardTableEntryClosure
Reviewed-by: ehelin, sjohanss

8178836: Improve PtrQueue index abstraction
Summary: Prefer element indexes where possible.
Reviewed-by: shade, mgerdin

8175221: Cleanup DirtyCardQueueSet::concatenate_log
Summary: concatenate_log calls flush, flush no longer checks "permanent"
Reviewed-by: tschatzl, shade

8157907: Incorrect inclusion of atomic.hpp instead of atomic.inline.hpp
Summary: Remove atomic.inline.hpp and move the contents back into atomic.hpp
Reviewed-by: stefank, pliden, simonis

8161993: G1 crashes if active_processor_count changes during startup
Summary: Use the initial active processor count for memory initialization instead of the current active one.
Reviewed-by: dholmes, mgerdin

8151670: Unexpected concurrent refinement deactivation and reactivation
Summary: Refinement threads now use SuspendibleThreadSet::yield.
Reviewed-by: jmasa, mgerdin

8151781: DirtyCardQueue::apply_closure is unused
Summary: Remove dead code, followup cleanups.
Reviewed-by: brutisso, pliden

8150676: Use BufferNode index
Summary: Maintain index and use it, removing extra checks for or stores of NULL.
Reviewed-by: jmasa, tschatzl

8139651: ConcurrentG1Refine uses ints for many of its members that should be unsigned types
Summary: ints need to be changed to size_t
Reviewed-by: kbarrett, tbenson

8149793: DirtyCardQueueSet::apply_closure_to_completed_buffer_helper isn't helpful
Summary: Merge helper into sole caller.
Reviewed-by: brutisso, jwilhelm, tschatzl

8148771: os::active_processor_count() returns garbage which causes VM to crash
Reviewed-by: kbarrett

8147906: G1 use of os::processor_count()
Summary: Use os::active_processor_count() instead of os::processor_count() in G1
Reviewed-by: dholmes, jmasa

8145038: Simplify mut_process_buffer worker id management
Summary: Remove some wasted code
Reviewed-by: kbarrett, tschatzl

8145037: Clean up FreeIdSet usage
Summary: Avoid wasting space for the unused sets
Reviewed-by: tschatzl

8141123: Cleanup in FreeIdSet
Summary: Some members of FreeIdSet should be size_t instead of ints. Also remove unused code
Reviewed-by: tschatzl, kbarrett, tbenson

8143013: Remove unused DirtyCardQueue::iterate_closure_all_threads
Summary: Remove unused function.
Reviewed-by: tbenson, tschatzl, mgerdin

Merge

6899049: G1: Clean up code in ptrQueue.[ch]pp and ptrQueue.inline.hpp
Summary: Simplify indexing, address obsolete code, improve access/type checking.
Reviewed-by: tschatzl, pliden

8141134: Remove unnecessary pragma warning(disable:4355) from GC code
Reviewed-by: ehelin, simonis, stuefe

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