Updated files to fix issue in case of SSO i.e. if code has already been written into the wp-login.php, profile.php and index.php files and if admin again wants to update SSO setting from WordPress plugin settings section then he will get success message instead of error message getting earlier.

git-svn-id: https://plugins.svn.wordpress.org/website-toolbox-forums/trunk@1024863 b8457f37-d9ea-0310-8a92-e5e31aec5664