hg: shenandoah/jdk9/hotspot: Sorting the regions for collection set takes a while during pause.

[ashipile at redhat.com]

Changeset: 1a7cae11ca05
Author:    shade
Date:      2017-01-26 19:57 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk9/hotspot/rev/1a7cae11ca05

Sorting the regions for collection set takes a while during pause.

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