hg: jdk9/hs-gc/hotspot: 8079579: Add SuspendibleThreadSetLeaver and make SuspendibleThreadSet::joint()/leave() private

[per.liden at oracle.com]

Changeset: a4a5ef4bc0c2
Author:    pliden
Date:      2015-05-11 13:57 +0200
URL:       http://hg.openjdk.java.net/jdk9/hs-gc/hotspot/rev/a4a5ef4bc0c2

8079579: Add SuspendibleThreadSetLeaver and make SuspendibleThreadSet::joint()/leave() private
Reviewed-by: brutisso, david

! src/share/vm/gc_implementation/g1/concurrentG1RefineThread.cpp
! src/share/vm/gc_implementation/g1/concurrentMark.cpp
! src/share/vm/gc_implementation/g1/concurrentMarkThread.cpp
! src/share/vm/gc_implementation/g1/g1StringDedupThread.cpp
! src/share/vm/gc_implementation/shared/suspendibleThreadSet.hpp