hg: shenandoah/jdk9/hotspot: Update region sampling protocol to capture update-refs and connection matrix.

[ashipile at redhat.com]

Changeset: 3b56bf7682d0
Author:    shade
Date:      2017-04-15 10:14 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/3b56bf7682d0

Update region sampling protocol to capture update-refs and connection matrix.

! src/share/vm/gc/shenandoah/shenandoahHeapRegionCounters.cpp
! src/share/vm/gc/shenandoah/shenandoahHeapRegionCounters.hpp