hg: jdk9/sandbox/hotspot: Merge

[stuart.marks at oracle.com]

Changeset: 58227e20e6b3
Author:    smarks
Date:      2015-09-09 15:20 -0700
URL:       http://hg.openjdk.java.net/jdk9/sandbox/hotspot/rev/58227e20e6b3

Merge

- src/share/vm/gc/g1/g1CollectorPolicy_ext.hpp