[feature/sqlite3] Add support for SQLite 3

Minimum version requirement is 3.6.15 as that's what ships with PHP 5.3.0
when support for SQLite 3 was added.

PHPBB3-9728

phpBB/develop/add_permissions.php

@@ -376,6 +376,7 @@ function mass_auth($ug_type, $forum_id, $ug_id, $acl_list, $setting)
 
 					case 'mssql':
 					case 'sqlite':
+					case 'sqlite3':
 						$sql = implode(' UNION ALL ', preg_replace('#^(.*?)$#', 'SELECT \1', $sql_subary));
 						break;