[rakudo] Extensively refactor .?, .+ and .* so they know about multi methods. Also add function level docs for them, which were missing before, plus for !.^.
[rakudo] Extensively refactor .?, .+ and .* so they know about multi methods. Also add function level docs for them, which were missing before, plus for !.^.

git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@33676 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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