Splitting _mb_request() into _mb_request() and _mb_request_raw() so that the raw XML from the webservice can be returned directly.

Signed-off-by: Ryan Helinski <rlhelinski@gmail.com>
Implementing access to alternative parsing routines with a setup function instead of with additional API function flags.

Signed-off-by: Ryan Helinski <rlhelinski@gmail.com>
Merge branch 'master' of https://github.com/rlhelinski/python-musicbrainzngs