[rakudo] Rip out a chunk of duplicated code from a routine, calling the new (and correct) version instead. Also, make !keyword_has now just forward to !meta_attribute, in preparation for removing it proper.
[rakudo] Rip out a chunk of duplicated code from a routine, calling the new (and correct) version instead. Also, make !keyword_has now just forward to !meta_attribute, in preparation for removing it proper.

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@35596 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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