Request for review (xs) 7024584: Symbol printouts shouldnt be under PrintGCDetails

[Coleen Phillimore]

Summary: Put symbol printing under Verbose and WizardMode so you can get 
this information if you really want it.

I didn't want to take it out because we will want to see this from time 
to time to make sure symbols are getting deleted during gc.

open webrev at http://cr.openjdk.java.net/~coleenp/7024584/
bug link at http://bugs.sun.com/view_bug.do?bug_id=7024584

Tested that the GC output for PrintGCDetails is the same as before all 
the symbol changes.

Thanks,
Coleen