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

8150994: UseParallelGC fails with UseDynamicNumberOfGCThreads with specjbb2005
Reviewed-by: tschatzl, kbarrett

8146987: Improve Parallel GC Full GC by caching results of live_words_in_range()
Summary: A large part of time in the parallel scavenge collector is spent finding out the amount of live words within memory ranges to find out where to move an object to. Try to incrementally calculate this value.
Reviewed-by: tschatzl, mgerdin, jmasa
Contributed-by: ray alex <sky1young@gmail.com>

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

8139203: Consistent naming for klass type predicates
8138923: Remove oop coupling with InstanceKlass subclasses
Summary: Renamed oop_is_instance and friends, removed the functions in oop that dug down into InstanceKlass.
Reviewed-by: jrose, lfoltan, stefank

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

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