Adding a Feide specific authentication module. This module will search ePPN...

Adding a Feide specific authentication module. This module will search ePPN (edupersonprincipalname) before binding instead of using a pattern like ldap-multi. Initial submit. Auth: Anders Lund

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@246 44740490-163a-0410-bde0-09ae8108e29a