multiple_signatures: correct typo, id -> sid
Add two test cases for multiple_signatures().
Merge branch 'master' of https://github.com/rohe/pysaml2
sign_statement: Remove unused variable 'key'.
Add pyXMLSecurity backend for signing/verifying.

It remains a TODO to make it possible to choose backend
through configuration.
Merge remote-tracking branch 'origin/master'

Conflicts:
	tests/test_40_sigver.py
Documentation.
Avoid creating extra CryptoBackends when verifying signatures.

SecurityContext's verify_signature can call self.crypto... directly
instead of calling a function that creates another CryptoBackend
instance.
Try to make only sigver know about xmlsec1.
Remove obsoleted verify_signature().
Use sign_statement() instead of sign_statement_using_xmlsec().
Merge branch 'master' of https://github.com/rohe/pysaml2
Merge branch 'master' of https://github.com/rohe/pysaml2
Merge branch 'master' into less_xmlsec_paths

Conflicts:
	src/saml2/config.py
	src/saml2/httpbase.py
	tests/test_30_mdstore.py
	tests/test_31_config.py
Merge pull request #20 from fredrikt/master

test multiple_signatures