hg: shenandoah/jdk9/hotspot: Update statistics to capture update-refs, partial root scans.

[ashipile at redhat.com]

Changeset: 4f70544dd8b2
Author:    shade
Date:      2017-04-27 11:17 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/4f70544dd8b2

Update statistics to capture update-refs, partial root scans.

! src/share/vm/gc/shenandoah/shenandoahCollectorPolicy.cpp
! src/share/vm/gc/shenandoah/shenandoahCollectorPolicy.hpp
! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.cpp
! src/share/vm/gc/shenandoah/shenandoahConcurrentMark.hpp
! src/share/vm/gc/shenandoah/shenandoahHeap.cpp
! src/share/vm/gc/shenandoah/shenandoahPartialGC.cpp