hg: jdk8u/jdk8u-dev/hotspot: 8166862: CMS needs klass_or_null_acquire

[felix.yang at huawei.com]

Changeset: be47c996965c
Author:    kbarrett
Date:      2016-10-21 22:26 -0400
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/be47c996965c

8166862: CMS needs klass_or_null_acquire
Summary: Change CMS non-assert uses of klass_or_null to klass_or_null_acquire.
Reviewed-by: tschatzl, mgerdin, adinn

! src/share/vm/gc_implementation/concurrentMarkSweep/compactibleFreeListSpace.cpp
! src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.cpp