the end of an era...

- MySQL < 4.1.3 support is removed
- renamed mysql4 to mysql, no need to cause confusion
- changed the cfg cacher, reduces file system lookups and include count by two on every page load


git-svn-id: file:///svn/phpbb/trunk@8307 89ea8834-ac86-4346-8a33-228a782c2dd0

phpBB/includes/acp/acp_users.php

@@ -1141,7 +1141,6 @@ class acp_users
 								break;
 
 								case 'mysql':
-								case 'mysql4':
 								case 'mysqli':
 									$right_delim = $left_delim = '`';
 								break;