hg: jdk/sandbox: Use BarrierSetAssembler instead of ModRefBarrierSetAssembler

[ashipile at redhat.com]

Changeset: 349aef8060b9
Author:    shade
Date:      2018-04-18 12:40 +0200
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/349aef8060b9

Use BarrierSetAssembler instead of ModRefBarrierSetAssembler

! src/hotspot/cpu/x86/gc/shared/modRefBarrierSetAssembler_x86.cpp
! src/hotspot/cpu/x86/gc/shared/modRefBarrierSetAssembler_x86.hpp
! src/hotspot/share/gc/epsilon/epsilonBarrierSet.hpp