8186166: Generalize Atomic::cmpxchg with templates
Reviewed-by: dholmes, coleenp
Contributed-by: kim.barrett@oracle.com

8165860: WorkGroup classes are missing volatile specifiers for lock-free code
Reviewed-by: mgerdin, tschatzl

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

8159073: : Error handling incomplete when creating GC threads lazily
Reviewed-by: drwhite, tschatzl, sangheki

8157240: GC task trace logging is incomprehensible
Reviewed-by: tschatzl, redestad

8157373: Active workers should not be reset in AbstractWorkGang initialize()
Reviewed-by: kbarrett, tschatzl, jwilhelm

8157620: Guarantee in run_task(task, num_workers) fails
Reviewed-by: tschatzl, drwhite

6858051: Create GC worker threads dynamically
Reviewed-by: tschatzl, drwhite

8155232: Augment Workgang to run task with a given number of threads
Summary: Add a method to run a WorkGang with a set number of threads.
Reviewed-by: stefank, jmasa, mgerdin

8153187: Convert TraceWorkGang to use unified logging
Reviewed-by: mgerdin, 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

8132510: Replace ThreadLocalStorage with compiler/language-based thread-local variables
Summary: Used compiled-based TLS when available. Additional contributions by Thomas Stufe (AIX) and Andrew Haley (Aarch64)
Reviewed-by: stuefe, bdelsart, dcubed

8134953: Make the GC ID available in a central place
Reviewed-by: pliden, jmasa

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

8087324: Use semaphores when starting and stopping GC task threads
Reviewed-by: jmasa, sjohanss

8087323: Unify and split the work gang classes
Reviewed-by: jmasa, sjohanss

8081682: AbstractWorkGang::_terminate is never used
Reviewed-by: kbarrett, pliden, brutisso

8080879: Remove FlexibleWorkGang::set_for_termination
Reviewed-by: brutisso, kbarrett, pliden

8080111: Remove SubTaskDone::_n_threads
Reviewed-by: jmasa, kbarrett

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