hg: shenandoah/jdk9/hotspot: Improve handling of cancelled-gc flag.

[roman at kennke.org]

Changeset: 430c7569981d
Author:    rkennke
Date:      2016-11-09 18:57 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/430c7569981d

Improve handling of cancelled-gc flag.

! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.cpp
! src/share/vm/gc/shenandoah/shenandoahHeap.cpp
! src/share/vm/gc/shenandoah/shenandoahHeap.hpp
! src/share/vm/gc/shenandoah/shenandoahHeap.inline.hpp
! src/share/vm/gc/shenandoah/shenandoah_globals.hpp