Correctly document (*SourceMgr).InferConstraint
Correctly document (*SourceMgr).InferConstraint

The previous commit changed the order of prefernce when inferring
constraints. Also, moved the bazaar GUID parsing stuff to make sure
that it receives the same preference level as revisions for other
repository types.

ibrasho-forks/dep,ibrasho-forks/dep,golang/dep,golang/dep,golang/dep