* Added a FakeAuth class, since it was so useful for hitting fake mode.
* Added a morph_request and morph_response function to the ReddwarfHTTPClient class, to make it possible to use different content types (XML).
* Added an XML module with a version of the client class that reads XML.
* Added a "mgmt" attribute to the Dbaas class, so that management classes can be hit in a way that closer approximates their URLs.
* Added a "resize_flavor" method, which is a clone of the "resize_instance" method, since that name makes a lot more sense.
