hg: shenandoah/jdk9/hotspot: Fix bad constant definition

[zgu at redhat.com]

Changeset: 555f3a32bf60
Author:    zgu
Date:      2017-03-21 13:29 -0400
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/555f3a32bf60

Fix bad constant definition

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