hg: shenandoah/jdk9/hotspot: [backport] Make sure selective barriers enabling/disabling works

[ashipile at redhat.com]

Changeset: a0d1a262d346
Author:    shade
Date:      2017-11-28 14:46 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/a0d1a262d346

[backport] Make sure selective barriers enabling/disabling works

! src/cpu/aarch64/vm/macroAssembler_aarch64.cpp
! src/cpu/x86/vm/macroAssembler_x86.cpp
! src/cpu/x86/vm/shenandoahBarrierSet_x86.cpp
! src/share/vm/c1/c1_LIR.hpp
! src/share/vm/c1/c1_LIRGenerator.cpp
! src/share/vm/ci/ciObjectFactory.cpp
! src/share/vm/gc/g1/satbMarkQueue.cpp
! src/share/vm/gc/shenandoah/shenandoahBarrierSet.cpp
! src/share/vm/opto/escape.cpp
! src/share/vm/opto/macroArrayCopy.cpp
! src/share/vm/opto/shenandoahSupport.hpp
! src/share/vm/opto/type.cpp
! src/share/vm/prims/jvmtiTagMap.cpp
! src/share/vm/runtime/thread.cpp
+ test/gc/shenandoah/TestSelectiveBarrierFlags.java