RFR: JDK-8007804: Need to be able to access Performance counter by name from JVM

[Nils Loodin]

Please review the following very small and insignificant change:
Basically, I need to access a performance-counter by name from within 
the JVM.

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8007804
http://cr.openjdk.java.net/~nloodin/8007804/webrev.00/

Regards,
Nils Loodin