RFR (S): 8012102: CollectedHeap::ensure_parsability is not always called during heap inspection

[Erik Helin]

Hi all,

this change fixes a bad refactoring. The method 
CollectedHeap::ensure_parsability must always be called prior to doing 
performing a heap inspection (to be able to traverse TLABs).

A previous change refactored the code so that the method was only called 
if a full GC was requested before the heap inspection.

Webrev:
http://cr.openjdk.java.net/~ehelin/8012102/webrev.00/

Bug:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8012102

Thanks,
Erik