hg: jdk/submit: 8215492: Rename INTERNAL_EMPTY to something less "internal"

[per.liden at oracle.com]

Changeset: 747d29313e5a
Author:    pliden
Date:      2018-12-19 23:40 +0100
URL:       http://hg.openjdk.java.net/jdk/submit/rev/747d29313e5a

8215492: Rename INTERNAL_EMPTY to something less "internal"
Reviewed-by: kbarrett, coleenp

! src/hotspot/share/gc/shared/barrierSetConfig.hpp
! src/hotspot/share/oops/access.cpp
! src/hotspot/share/oops/access.hpp
! src/hotspot/share/oops/accessBackend.hpp
! src/hotspot/share/oops/accessDecorators.hpp
! src/hotspot/share/runtime/jniHandles.cpp
! src/hotspot/share/runtime/jniHandles.inline.hpp