Please review fix for 7196681: NPG: Some JSR 292 tests crash in Windows exception handler

[Coleen Phillimore]

Summary: There was a rogue os::breakpoint() call in log_dependency left 
over from the jsr292 merge.  Also removed verify_oop() calls for metadata.

Tested CallSiteTest on windows 64 where this os::breakpoint() actually 
sends a breakpoint signal.

open webrev at http://cr.openjdk.java.net/~coleenp/7196681/
bug link at http://bugs.sun.com/view_bug.do?bug_id=7196681

Thanks,
Coleen