Merge pull request #2671 from Nicofuma/ticket/12775

[ticket/12775] Replace functions_container with a container_builder class.

* Nicofuma/ticket/12775: (34 commits)
  [ticket/12775] Set dbal.conn.driver as synthetic during installation
  [ticket/12775] Add the definition of dbal.conn in fixtures/config/services.yml
  [ticket/12775] Inject the connection when created in the container
  [ticket/12775] Extract the vars later in install/install_update.php
  [ticket/12775] Rename config_php_handler to config_php_file container_builder
  [ticket/12775] Set defined_vars as a property of config_php_file
  [ticket/12775] Fix doc blocks in the container builder
  [ticket/12775] Remove useless includes of config.php
  [ticket/12775] Move phpbb_convert_30_dbms_to_31 into the config file class
  [ticket/12775] Fix comments
  [ticket/12775] Update doc blocks
  [ticket/12775] Fix container_builder
  [ticket/12775] Rename config_php to config_php_file
  [ticket/12775] Renamed to \phpbb\di\container_builder
  [ticket/12775] Remove the last include of functions_container
  [ticket/12775] Fix unit tests
  [ticket/12775] Add tests for \phpbb\config_php
  [ticket/12775] Add tests for the container factory
  [ticket/12775] Use a field instead of a local var in load_config_var()
  [ticket/12775] Update container and config in install/
  ...

phpBB/config/services.yml

@@ -39,9 +39,6 @@ services:
     cache.driver:
         class: %cache.driver.class%
 
-    cache.driver.install:
-        class: phpbb\cache\driver\file
-
     class_loader:
         class: phpbb\class_loader
         arguments:
@@ -69,6 +66,9 @@ services:
             - @cache.driver
             - %tables.config%
 
+    config.php:
+        synthetic: true
+
     config_text:
         class: phpbb\config\db_text
         arguments: