[core] Parrot Subs that get their arity inspected cache the information. However, when we cloned, we ended up with two subs sharing that cache. This could lead to double frees, or (in the case that led to me discovering this bug) a sub reporting an arity of over sixty thousand.
[core] Parrot Subs that get their arity inspected cache the information. However, when we cloned, we ended up with two subs sharing that cache. This could lead to double frees, or (in the case that led to me discovering this bug) a sub reporting an arity of over sixty thousand.

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@37980 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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