hg: shenandoah/jdk10: Make sure selective barriers enabling/disabling works

[ashipile at redhat.com]

Changeset: 56e53e489fe0
Author:    shade
Date:      2017-11-23 09:28 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk10/rev/56e53e489fe0

Make sure selective barriers enabling/disabling works

! src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/shenandoahBarrierSet_aarch64.cpp
! src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp
! src/hotspot/cpu/x86/macroAssembler_x86.cpp
! src/hotspot/cpu/x86/shenandoahBarrierSet_x86.cpp
! src/hotspot/cpu/x86/stubGenerator_x86_64.cpp
! src/hotspot/share/c1/c1_LIR.hpp
! src/hotspot/share/c1/c1_LIRGenerator.cpp
! src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp
! src/hotspot/share/opto/escape.cpp
! src/hotspot/share/opto/macroArrayCopy.cpp
! src/hotspot/share/opto/shenandoahSupport.hpp
! src/hotspot/share/opto/type.cpp
! src/hotspot/share/runtime/thread.cpp
+ test/hotspot/jtreg/gc/shenandoah/TestSelectiveBarrierFlags.java