Contacts created via profile don't use UFMatch BAO

Contacts created through a profile call the UFMatch DAO, not the BAO. I can't see any reason why this might be the case, other than that no one has ever fixed it; the BAO wrapper only calls hooks and the DAO.

In order that we can call the UFMatch hook on profile creation, I'm submitting a patch that calls BAO::create rather than the DAO constructor.