RFR (S): 8008737: The trace event vm/gc/heap/summary is missing for CMS

[Erik Helin]

Hi all,

this change adds the trace event vm/gc/heap/summary to the CMS collector.

Webrev:
http://cr.openjdk.java.net/~ehelin/8008737/webrev.00/

Bug:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8008737

Testing:
JPRT

Thanks,
Erik