hg: shenandoah/jdk9/hotspot: Stats should not record past-shutdown events

[ashipile at redhat.com]

Changeset: b8b77a219d94
Author:    shade
Date:      2017-06-07 18:42 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/b8b77a219d94

Stats should not record past-shutdown events

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