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

[pavel.punegov at oracle.com]

Changeset: 4a67e08031be
Author:    kzhaldyb
Date:      2016-04-20 19:16 +0300
URL:       http://hg.openjdk.java.net/jdk9/hs/rev/4a67e08031be

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

! test/lib/sun/hotspot/WhiteBox.java