8177963: Parallel GC fails fast when per-thread task log overflows
Summary: Instead of exiting the VM when per-thread task log overflows, print warnings once and ignore any further log addition attempt.
Reviewed-by: ysr, kbarrett, sangheki

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

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

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

8153186: Convert TraceGCTaskThread to use unified logging
Reviewed-by: mgerdin, tschatzl

8151605: Change warning() to log_warning(gc) in the GC code
Reviewed-by: jwilhelm, jmasa

8146409: TestPromotionFailedEventWithParallelScavenge.java failed with assert(_time_stamps != __null) failed: Sanity
Reviewed-by: tschatzl, jwilhelm

8145315: VM crashes in print_task_time_stamps()
Reviewed-by: jwilhelm, jmasa

8145092: Use Unified Logging for the GC logging
Summary: JEP-271. VM changes contributed by brutisso, test changes contributed by david.
Reviewed-by: sjohanss, david, brutisso
Contributed-by: bengt.rutisson@oracle.com, david.lindholm@oralce.com

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

8138707: TestPromotionEventWithParallelScavenge.java crashes using undefined GC id.
Reviewed-by: mgerdin, jwilhelm

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