small modification: we can now store any information in sessions

(cf topic:5667)

git-svn-id: http://piwigo.org/svn/trunk@1032 68402e56-0260-453c-a942-63ccdbb3a9ee

include/functions_session.inc.php

@@ -154,7 +154,8 @@ SELECT id
   {
     $query = '
 UPDATE '.SESSIONS_TABLE.' 
-  SET expiration = now()
+  SET expiration = now(),
+  data = \''.$data.'\'
   WHERE id = \''.$session_id.'\'
 ;';    
     pwg_query($query);