Update todo

darcs-hash:20090116093822-58252-a6e5ff8b04163b8a2f671efa47cdf1a9f28da940
sip_im_session: do not use relay for :call command

darcs-hash:20090116105103-b2873-152f5c84abe9f0a910e4f19dc390c8d9e74825a0