RFR (S): 8004924: NPG: jmap -heap output should contain ClassMetaspaceSize value

[Erik Helin]

Hi all,

this change the flag ClassMetapaceSize to the output of jmap -heap. I
have also added a test that checks the ouput (the test uses the new 
process builder framework).

Webrev:
http://cr.openjdk.java.net/~ehelin/8004924/webrev.00/

Bug:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8004924

Testing:
JPRT

Thanks,
Erik