hg: shenandoah/jdk8u/hotspot: [backport] Print heap changes in phases that actually change heap occupancy

[ashipile at redhat.com]

Changeset: 0076322a406c
Author:    shade
Date:      2017-05-10 12:30 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk8u/hotspot/rev/0076322a406c

[backport] Print heap changes in phases that actually change heap occupancy

! src/share/vm/gc_implementation/shenandoah/shenandoahConcurrentThread.cpp
! src/share/vm/gc_implementation/shenandoah/vm_operations_shenandoah.cpp