hg: shenandoah/jdk10/hotspot: JMX double-counts heap used size

[ashipile at redhat.com]

Changeset: b0eaf099d8a8
Author:    shade
Date:      2017-09-08 21:26 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk10/hotspot/rev/b0eaf099d8a8

JMX double-counts heap used size

! src/share/vm/services/memoryService.cpp
! src/share/vm/services/memoryService.hpp
! src/share/vm/services/shenandoahMemoryPool.cpp
! src/share/vm/services/shenandoahMemoryPool.hpp
+ test/gc/shenandoah/TestMemoryMXBeans.java