Merge pull request #1715 from owncloud/fixing-1640-master

changing the bit mask of OC_USER_BACKEND_SET_DISPLAYNAME

lib/user/backend.php

@@ -36,7 +36,7 @@ define('OC_USER_BACKEND_SET_PASSWORD',      0x000010);
 define('OC_USER_BACKEND_CHECK_PASSWORD',    0x000100);
 define('OC_USER_BACKEND_GET_HOME',			0x001000);
 define('OC_USER_BACKEND_GET_DISPLAYNAME',	0x010000);
-define('OC_USER_BACKEND_SET_DISPLAYNAME',	0x010000);
+define('OC_USER_BACKEND_SET_DISPLAYNAME',	0x100000);
 
 
 /**