Fixed issue 04995 : check data integrity old_table oldtoken doesn't work for db with $dbprefix = ''
Dev : use explode("", substr($table,strlen($dbprefix))); every where i found "_" and rename the variable

git-svn-id: file:///Users/Shitiz/Downloads/lssvn/source/limesurvey_dev@9846 b72ed6b6-b9f8-46b5-92b4-906544132732