hg: jdk9/hs/hotspot: 8148813: Windows os::check_heap needs more information

[ioi.lam at oracle.com]

Changeset: ed960e1c67fe
Author:    iklam
Date:      2016-06-26 20:00 -0700
URL:       http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/ed960e1c67fe

8148813: Windows os::check_heap needs more information
Summary: added ring buffer to log info while walking the heap
Reviewed-by: mgronlun, dholmes, ccheung

! src/os/windows/vm/os_windows.cpp