muc-channel: factor out gabble_muc_channel_send_invite
muc-channel: factor out gabble_muc_channel_send_invite

20080529095248-7fe3f-a2d412857ddfe910dd7964a91309c43763269edd.gz

community-ssu/telepathy-gabble,Ziemin/telepathy-gabble,Ziemin/telepathy-gabble,community-ssu/telepathy-gabble,mlundblad/telepathy-gabble,Ziemin/telepathy-gabble,community-ssu/telepathy-gabble,mlundblad/telepathy-gabble,Ziemin/telepathy-gabble,jku/telepathy-gabble,jku/telepathy-gabble,community-ssu/telepathy-gabble,jku/telepathy-gabble,mlundblad/telepathy-gabble