[ticket/11015] Make DBAL classes autoloadable

PHPBB3-11015

This allows us to just create the object without having to include the
driver first. However, it also means that users must specify the full
class name in config.php

phpBB/includes/db/driver/firebird.php

@@ -15,14 +15,12 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * Firebird/Interbase Database Abstraction Layer
 * Minimum Requirement is Firebird 2.1
 * @package dbal
 */
-class dbal_firebird extends dbal
+class phpbb_db_driver_firebird extends phpbb_db_driver
 {
 	var $last_query_text = '';
 	var $service_handle = false;

phpBB/includes/db/driver/mssql.php

@@ -15,14 +15,12 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * MSSQL Database Abstraction Layer
 * Minimum Requirement is MSSQL 2000+
 * @package dbal
 */
-class dbal_mssql extends dbal
+class phpbb_db_driver_mssql extends phpbb_db_driver
 {
 	/**
 	* Connect to server
@@ -374,7 +372,7 @@ class dbal_mssql extends dbal
 			FROM master.dbo.sysmessages
 			WHERE error = ' . $error['code'];
 		$result_id = @mssql_query($sql);
-		
+
 		if ($result_id)
 		{
 			$row = @mssql_fetch_assoc($result_id);

phpBB/includes/db/driver/mssql_odbc.php

@@ -15,8 +15,6 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * Unified ODBC functions
 * Unified ODBC functions support any database having ODBC driver, for example Adabas D, IBM DB2, iODBC, Solid, Sybase SQL Anywhere...
@@ -28,7 +26,7 @@ include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
 *
 * @package dbal
 */
-class dbal_mssql_odbc extends dbal
+class phpbb_db_driver_mssql_odbc extends phpbb_db_driver
 {
 	var $last_query_text = '';
 

phpBB/includes/db/driver/mssqlnative.php

@@ -19,8 +19,6 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
  * Prior to version 1.1 the SQL Server Native PHP driver didn't support sqlsrv_num_rows, or cursor based seeking so we recall all rows into an array
  * and maintain our own cursor index into that array.
@@ -193,7 +191,7 @@ class result_mssqlnative
 /**
 * @package dbal
 */
-class dbal_mssqlnative extends dbal
+class phpbb_db_driver_mssqlnative extends phpbb_db_driver
 {
 	var $m_insert_id = NULL;
 	var $last_query_text = '';

phpBB/includes/db/driver/mysql.php

@@ -15,8 +15,6 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * MySQL4 Database Abstraction Layer
 * Compatible with:
@@ -26,7 +24,7 @@ include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
 * MySQL 5.0+
 * @package dbal
 */
-class dbal_mysql extends dbal
+class phpbb_db_driver_mysql extends phpbb_db_driver
 {
 	var $multi_insert = true;
 

phpBB/includes/db/driver/mysqli.php

@@ -15,15 +15,13 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * MySQLi Database Abstraction Layer
 * mysqli-extension has to be compiled with:
 * MySQL 4.1+ or MySQL 5.0+
 * @package dbal
 */
-class dbal_mysqli extends dbal
+class phpbb_db_driver_mysqli extends phpbb_db_driver
 {
 	var $multi_insert = true;
 

phpBB/includes/db/driver/oracle.php

@@ -15,13 +15,11 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * Oracle Database Abstraction Layer
 * @package dbal
 */
-class dbal_oracle extends dbal
+class phpbb_db_driver_oracle extends phpbb_db_driver
 {
 	var $last_query_text = '';
 

phpBB/includes/db/driver/postgres.php

@@ -15,19 +15,12 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
-if (!class_exists('phpbb_error_collector'))
-{
-	include($phpbb_root_path . 'includes/error_collector.' . $phpEx);
-}
-
 /**
 * PostgreSQL Database Abstraction Layer
 * Minimum Requirement is Version 7.3+
 * @package dbal
 */
-class dbal_postgres extends dbal
+class phpbb_db_driver_postgres extends phpbb_db_driver
 {
 	var $last_query_text = '';
 	var $connect_error = '';

phpBB/includes/db/driver/sqlite.php

@@ -15,14 +15,12 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
-
 /**
 * Sqlite Database Abstraction Layer
 * Minimum Requirement: 2.8.2+
 * @package dbal
 */
-class dbal_sqlite extends dbal
+class phpbb_db_driver_sqlite extends phpbb_db_driver
 {
 	/**
 	* Connect to server