Changed to use idp2 instead of idp
Editorial
Switched to use the structure used in AuthnBroker
Added support for comparision types.
Switched from one authentication method to use the AuthnBroker to chose a set of methods based on the requested authentication context.
Distinguish between requested authn context and authn context in tests.
Fixed handling of 'better'.
Merge branch 'master' of github.com:rohe/pysaml2