Replace calls to SimpleSAML_Utilities::fatalError with throwing an exception.
Replace calls to SimpleSAML_Utilities::fatalError with throwing an exception.

Also remove those instances of the $session variable that became unused.

git-svn-id: a243b28a2a52d65555a829a95c8c333076d39ae1@2479 44740490-163a-0410-bde0-09ae8108e29a

simplesamlphp/simplesamlphp-module-openid,simplesamlphp/simplesamlphp-module-openid