Review request: 6581734 CMS Old Gen's collection usage is zero after GC which is incorrect

[Kevin Walls]

Hi -

This is a review request for the issue where cms doesn't update the 
statistics used by the MemoryPoolMXBean system: only concurrent mode 
failures update the stats.  We just aren't prepared for concurrent 
collections, so it takes a fair amount of customisation to add that 
flexibility...

http://cr.openjdk.java.net/~kevinw/6581734/webrev/

Thanks
Kevin