hg: shenandoah/jdk9/hotspot: 3 new changesets

[zgu at redhat.com]

Changeset: c831d368463c
Author:    zgu
Date:      2016-11-18 10:18 -0500
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/c831d368463c

Utilize parallel workers for GC tasks during a safepoint

! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.cpp
! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.hpp
! src/share/vm/gc/shenandoah/shenandoahHeap.cpp
! src/share/vm/gc/shenandoah/shenandoahMarkCompact.hpp
! src/share/vm/gc/shenandoah/shenandoahTaskqueue.cpp
! src/share/vm/gc/shenandoah/shenandoahTaskqueue.hpp

Changeset: c98fccbedd84
Author:    zgu
Date:      2016-11-21 12:16 -0500
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/c98fccbedd84

Correctly setting up ReferenceProcess's active_mt_degress for auto queue balancing

! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.cpp
! src/share/vm/gc/shenandoah/shenandoahMarkCompact.cpp

Changeset: fcdffec29931
Author:    zgu
Date:      2016-11-21 12:17 -0500
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/fcdffec29931

Merge