8182050: assert(_whole_heap.contains(p)) failed: Attempt to access p out of bounds of card marking array's _whole_heap Summary: Ignore zero-sized MemRegions to invalidate in G1SATBCardTableLoggingModRefBS::invalidate() Reviewed-by: ehelin, sjohanss

8179244: Assert failed in instanceMirrorKlass.inline.hpp Summary: Investigate the failure and upon observing that the assert is too strict, disable it and addd a comment. Reviewed-by: ehelin

8189733: Cleanup Full GC setup and tear down Reviewed-by: tschatzl, ehelin

Merge