[PMC] Fixed context reference counting in Exception PMC, so that exception contexts don't get destroyed early but do get destroyed on time.  This fixes some double-free errors during Parrot full destruction and probably prevents other weird memory errors in long running programs.
[PMC] Fixed context reference counting in Exception PMC, so that exception
contexts don't get destroyed early but do get destroyed on time.  This fixes
some double-free errors during Parrot full destruction and probably prevents
other weird memory errors in long running programs.

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@30149 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot,ashgti/parrot