[NEWS] move gc-related stuff under "implementation" instead of "miscellaneous"
[NEWS] move gc-related stuff under "implementation" instead of "miscellaneous"

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@28448 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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