[concurrency] After changing the 'interp' struct element from PMC * to Parrot_Interp, no longer need to freeze it.
[concurrency] After changing the 'interp' struct element from PMC * to
Parrot_Interp, no longer need to freeze it.


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@24417 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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