8055141: Catch linker errors earlier in the JVM build by not allowing unresolved externals Reviewed-by: erikj, ehelin, dholmes

8036116: Fix thread-id types in G1 remembered set implementations Reviewed-by: stefank, jprovino, brutisso Contributed-by: sangheon.kim@oracle.com

Merge

Merge

8027450: Improve time reporting in G1 remark Reviewed-by: stefank, tschatzl

8058495: G1: normalize names for isHumongous() and friends Reviewed-by: tschatzl, brutisso

8058235: identify GCs initiated to update allocation context stats Reviewed-by: mikael, sjohanss

8057752: WhiteBox extension support for testing Summary: Refactored parts of whitebox.cpp to enable registration of whitebox methods defined outside this file. Reviewed-by: mikael, ctornqvi, jmasa

8057827: notify an obj when allocation context stats are available Reviewed-by: mikael, jmasa, tschatzl

8057824: methods to copy allocation context statistics Reviewed-by: mikael, jmasa, tschatzl

8057818: collect allocation context statistics at gc pauses Reviewed-by: mikael, jmasa

8057710: Refactor G1 heap region default sizes Summary: Refactored the defines to instead be static const in a HeapRegionBounds class. Reviewed-by: mgerdin, tschatzl

8057658: Enable G1 FullGC extensions Summary: Refactored the G1 FullGC code to enable it to be extended. Reviewed-by: mgerdin, brutisso

8057623: add an extension class for argument handling Reviewed-by: brutisso, mgerdin, tschatzl

8057536: Refactor G1 to allow context specific allocations Summary: Splitting out a g1 allocator class to simply specialized allocators which can associate each allocation with a given context. Reviewed-by: mgerdin, brutisso