hg: jdk9/hs/hotspot: 8135200: Add White Box method that enumerates G1 old regions with less than specified liveness and collects statistics

[pavel.punegov at oracle.com]

Changeset: 300be48156c5
Author:    kzhaldyb
Date:      2016-04-20 19:54 +0300
URL:       http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/300be48156c5

8135200: Add White Box method that enumerates G1 old regions with less than specified liveness and collects statistics
Reviewed-by: tschatzl, dfazunen, iignatyev

! src/share/vm/prims/whitebox.cpp