Merge branch 'master' of https://github.com/rohe/pysaml2
Merge branch 'master' of https://github.com/rohe/pysaml2
Merge branch 'master' of https://github.com/rohe/pysaml2
Improve MongoDB support.

* Support configuration with MongoDB connection URI strings.
* Handle connecting to replica sets.
* Use standard notation database+collection rather than
  collection+sub_collection.

Note that these changes are NOT expected to be fully backwards
compatible for someone using mongodb with pysaml2 already.
Merge branch 'mongodb_uri_support' of https://github.com/fredrikt/pysaml2