SAML2_Message: Add forgotten AttributeQuery message type.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@1647 44740490-163a-0410-bde0-09ae8108e29a

lib/SAML2/Message.php

@@ -461,6 +461,8 @@ abstract class SAML2_Message implements SAML2_SignedElement {
 		}
 
 		switch ($xml->localName) {
+		case 'AttributeQuery':
+			return new SAML2_AttributeQuery($xml);
 		case 'AuthnRequest':
 			return new SAML2_AuthnRequest($xml);
 		case 'LogoutResponse':