Add support for the credentials callback to Rugged::Remote methods.
Add support for the credentials callback to Rugged::Remote methods.

Acidburn0zzz/rugged,libgit2/rugged,saraid/rugged,Acidburn0zzz/rugged,tpickett66/rugged,saraid/rugged,libgit2/rugged,saraid/rugged,tpickett66/rugged,Acidburn0zzz/rugged,libgit2/rugged,tpickett66/rugged