Login with multiple "alternate names" (see email addresses) to one user

[dustinbrisebois]

I have a case where some fuzzy logic is needed around the find-user component where multiple potential addresses are needed to login to one account. Can the code wrapped around this component be adjusted to allow for one-of (like) statements?

https://github.com/catalyst/moodle-auth_saml2/blob/master/auth.php#L521