Turn talons and talons.auth into namspace pkgs

In order to use the same namespace "talons.auth" in external distrbutions
like talons.auth.oauth, it was necessary to turn talons and talons.auth
into namespace packages. Luckily, nobody has forked us so we're not in
danger of breaking any compatibility.
Merge pull request #4 from jaypipes/working

Turn talons and talons.auth into namspace pkgs