RFR: 8014659: NPG: performance counters for compressed klass space

[Erik Helin]

Hi all,

this is the JDK part of the fix for 8014659 [0]. I've added the output
of the compressed class space performance counters next to the metaspace
output. I've also updated the jstat and jstatd tests to take the new
output into account.

Webrev:
http://cr.openjdk.java.net/~ehelin/8014659/webrev.00/

Testing:
- jdk/test/sun/tools/jstat
- jdk/test/sun/tools/jstatd

Thanks,
Erik

[0]: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8014659