8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended Reviewed-by: brutisso, jwilhelm

8151693: Move print_heap_before/after_gc to debug level Reviewed-by: brutisso, jwilhelm

Merge

8151728: jni test crashes JVM assert(_handle != __null) failed: resolving NULL handle Summary: New assert needs to check for null. Reviewed-by: hseigel, gtriantafill

8140257: Add support for "gc service threads" to ConcurrentGCThread Summary: Push up the common run() and stop() methods from subclasses to ConcurrentGCThread, as well as declaration iof run_service() stop_service(). Reviewed-by: kbarrett, pliden

8151604: Rely on options range checking rather than explict checks Reviewed-by: jwilhelm, drwhite, sangheki

Merge

8146551: The output from classresolve tag has been shortened and moved to debug level. Summary: The output from classresolve tag has been shortened and moved to debug level. Reviewed-by: coleenp, rprotacio

Merge

8151265: Add a way to extend UL tags Reviewed-by: dholmes, kbarrett

8151304: Remove unused develop options(ClearInterpreterLocals and others) Reviewed-by: coleenp, jwilhelm

Merge

8151605: Change warning() to log_warning(gc) in the GC code Reviewed-by: jwilhelm, jmasa

8151602: Remove logging from refillLinearAllocBlockIfNeeded() Reviewed-by: tschatzl, sjohanss

8151603: Use error stream instead of tty for logging before ShouldNotReachHere() Reviewed-by: mgerdin, sjohanss

8151633: Don't keep copies of the survivor lists and counts in the G1CollectorPolicy Reviewed-by: tbenson, tschatzl