hg: shenandoah/jdk9/hotspot: Fix double-marking.

[roman at kennke.org]

Changeset: 6854d3818395
Author:    rkennke
Date:      2017-01-30 17:33 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/6854d3818395

Fix double-marking.

! src/share/vm/gc/shenandoah/shenandoahCollectorPolicy.cpp
! src/share/vm/gc/shenandoah/shenandoahCollectorPolicy.hpp
! src/share/vm/gc/shenandoah/shenandoahMarkCompact.cpp
! src/share/vm/gc/shenandoah/shenandoah_globals.hpp