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

8159974: G1 String deduplication logging not aligned with the rest of G1
Reviewed-by: stefank, tschatzl

8146690: Make all classes in GC follow the naming convention.
Reviewed-by: dholmes, stefank

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

8081202: Hotspot compile warning: "Invalid suffix on literal; C++11 requires a space between literal and identifier"
Summary: Need to add a space between macro identifier and string literal
Reviewed-by: stefank, dholmes, kbarrett

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

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