Reviewed-by: stefank, jmasa

Summary: Revamp of the mechanism that chooses old regions for inclusion in the CSet. It simplifies the code and introduces min and max bounds on the number of old regions added to the CSet at each mixed GC to avoid pathological cases. It also ensures that when we do a mixed GC we'll always find old regions to add to the CSet (i.e., it eliminates the case where a mixed GC will collect no old regions which can happen today).
Reviewed-by: johnc, brutisso

Summary: Replace calls to os::javaTimeMillis() that are used to update the milliseconds since the last GC to an equivalent that uses a monotonically non-decreasing time source.
Reviewed-by: ysr, jmasa

Summary: If we try to schedule an initial-mark GC in order to explicit start a conc mark cycle and it gets pre-empted by antoher GC, we should retry the attempt as long as it's appropriate for the GC cause.
Reviewed-by: brutisso, johnc

Summary: Prunes scavenge roots in code list every young GC, promote objects directly pointed by the code immediately
Reviewed-by: johnc, jcoomes

Reviewed-by: jcoomes

Summary: Fix EXPORT_PATH overrides on Mac OS X and only change default.
Reviewed-by: phh, dcubed
Contributed-by: james.melvin@oracle.com

Summary: Comment out JPRT jbb tests on Mac OS X until GUI hang can be fixed
Reviewed-by: dholmes, brutisso, phh
Contributed-by: james.melvin@oracle.com

Reviewed-by: jcoomes

Reviewed-by: phh, jmasa

Reviewed-by: twisti
Contributed-by: NVolker Simonis <volker.simonis@gmail.com>

Reviewed-by: kvn

Summary: Add support for packaging HotSpot JVM builds in universal binaries
Reviewed-by: dholmes, kamg, dcubed, phh
Contributed-by: james.melvin@oracle.com

Reviewed-by: kvn, jrose, kevinw, brutisso, twisti, jmasa

Summary: too optimistic inlining decision confuses local value numbering.
Reviewed-by: never

Reviewed-by: never

Summary: Use unknown_obj instead of empty_map for NULL or Constant Pool object constants in bytecode Escape Analyzer.
Reviewed-by: iveresov, never

Summary: 7u4 new experimental flag -XX:PredictedClassLoadedCount=#
Reviewed-by: dholmes, phh, dcubed

Summary: Fix pure c2 builds
Reviewed-by: kvn, brutisso, never

Summary: Add define of INCLUDE_TRACE
Reviewed-by: sla, kamg

Summary: Changed "return false" to "return NULL"
Reviewed-by: dholmes, rottenha
Contributed-by: dbhole@redhat.com

Reviewed-by: kvn, iveresov, dholmes

Reviewed-by: jcoomes

Summary: Temporarily disabled multi-threaded reference discovery when entering a single-threaded remark phase.
Reviewed-by: brutisso, tonyp, jmasa, jcoomes

Summary: Changed to the correct annotation arrays
Reviewed-by: kamg, dholmes, sla