[ticket/11700] Fix extension loading with namespaces

class loader now expects all classes to be prefixed with a backslash
when resolving paths

PHPBB3-11700

tests/functional/fixtures/ext/foo/bar/acp/main_info.php

@@ -8,6 +8,8 @@
 *
 */
 
+namespace foo\bar\acp;
+
 /**
 * @ignore
 */
@@ -16,12 +18,12 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-class phpbb_ext_foo_bar_acp_main_info
+class main_info
 {
 	function module()
 	{
 		return array(
-			'filename'	=> 'phpbb_ext_foo_bar_acp_main_module',
+			'filename'	=> 'foo\bar\acp\main_module',
 			'title'		=> 'ACP_FOOBAR_TITLE',
 			'version'	=> '1.0.0',
 			'modes'		=> array(

tests/functional/fixtures/ext/foo/bar/acp/main_module.php

@@ -8,6 +8,8 @@
 *
 */
 
+namespace foo\bar\acp;
+
 /**
 * @ignore
 */
@@ -16,7 +18,7 @@ if (!defined('IN_PHPBB'))
 	exit;
 }
 
-class phpbb_ext_foo_bar_acp_main_module
+class main_module
 {
 	var $u_action;
 

tests/functional/fixtures/ext/foo/bar/config/services.yml

@@ -1,6 +1,6 @@
 services:
     foo_bar.controller:
-        class: phpbb_ext_foo_bar_controller
+        class: foo\bar\controller\controller
         arguments:
             - @controller.helper
             - @template

tests/functional/fixtures/ext/foo/bar/controller/controller.php

@@ -1,7 +1,10 @@
 <?php
+
+namespace foo\bar\controller;
+
 use Symfony\Component\HttpFoundation\Response;
 
-class phpbb_ext_foo_bar_controller
+class controller
 {
 	protected $template;
 

tests/functional/fixtures/ext/foo/bar/event/permission.php

@@ -8,6 +8,8 @@
 *
 */
 
+namespace foo\bar\event;
+
 /**
 * @ignore
 */
@@ -22,7 +24,7 @@ if (!defined('IN_PHPBB'))
 */
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
-class phpbb_ext_foo_bar_event_permission implements EventSubscriberInterface
+class permission implements EventSubscriberInterface
 {
 	static public function getSubscribedEvents()
 	{

tests/functional/fixtures/ext/foo/bar/event/user_setup.php

@@ -8,6 +8,8 @@
 *
 */
 
+namespace foo\bar\event;
+
 /**
 * @ignore
 */
@@ -22,7 +24,7 @@ if (!defined('IN_PHPBB'))
 */
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
-class phpbb_ext_foo_bar_event_user_setup implements EventSubscriberInterface
+class user_setup implements EventSubscriberInterface
 {
 	static public function getSubscribedEvents()
 	{

tests/functional/fixtures/ext/foo/bar/ext.php

@@ -1,6 +1,8 @@
 <?php
 
-class phpbb_ext_foo_bar_ext extends \phpbb\extension\base
+namespace foo\bar;
+
+class ext extends \phpbb\extension\base
 {
 
 }