8165857: CMS _overflow_list is missing volatile specifiers.
Summary: Change _overflow_list from "oop" to "oopDesc* volatile", both CMS and ParNew.
Reviewed-by: kbarrett, tschatzl

8033552: Fix missing missing volatile specifiers in CAS operations in GC code
Summary: Add missing volatile specifiers.
Reviewed-by: kbarrett, tschatzl

8156548: gc/gctests/StringInternSyncWithGC2 fails with Test level exit status: 151
Summary: Avoid repeated verification.
Reviewed-by: jmasa, drwhite

8141501: Problems with BitMap buffer management
Reviewed-by: pliden, kbarrett

8153302: [BACKOUT] STW phases at Concurrent GC should count in PerfCounter
Reviewed-by: jmasa, jwilhelm

8151674: STW phases at Concurrent GC should count in PerfCounter
Reviewed-by: jmasa, sla, tschatzl

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

8068394: Trace event for concurrent GC phases
Summary: Add concurrent phase events for CMS and G1
Reviewed-by: brutisso, 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

8143544: Make CMSCollector::is_cms_reachable() non-product
Reviewed-by: ysr, tschatzl

8139952: Remove UseCMSAdaptiveFreeLists, UseAsyncConcMarkSweepGC, CMSDictionaryChoice, CMSOverflowEarlyRestoration and CMSTestInFreeList
Reviewed-by: jwilhelm, ecaspole

8139772: Cleanups in Generation related code
Reviewed-by: tbenson, mgerdin

8139294: TestGCEventMixedWithCMSConcurrent.java still fails after JDK-8134953
Reviewed-by: jwilhelm, ecaspole

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

8134626: Misc cleanups after generation array removal
Reviewed-by: david, dholmes, tschatzl

8078904: CMS: Assert failed: Ctl pt invariant
Summary: Survivor rescan array now baed on MinTLABSize so all entries will fit
Reviewed-by: tschatzl, kbarrett

8077842: Remove the level parameter passed around in GenCollectedHeap
Reviewed-by: kbarrett, mgerdin

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