fix the case where overlapping vCard changes are made
fix the case where overlapping vCard changes are made

When we receive a reply to an edit request, send off any changes that were
made in the meantime. Also, when a new edit reqeust is created, check for
pending set requests as well as pending get requests before generating a bogus
get request.

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