hg: jdk8u/jdk8u-dev/hotspot: 8166583: Add oopDesc::klass_or_null_acquire()

[felix.yang at huawei.com]

Changeset: b4a58a1cd60f
Author:    kbarrett
Date:      2016-09-23 18:23 -0400
URL:       https://hg.openjdk.java.net/jdk8u/jdk8u-dev/hotspot/rev/b4a58a1cd60f

8166583: Add oopDesc::klass_or_null_acquire()
Summary: Added new function.
Reviewed-by: dholmes, tschatzl, adinn

! src/share/vm/oops/oop.hpp
! src/share/vm/oops/oop.inline.hpp