[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
[ticket/11015] Add BC files for the drivers

PHPBB3-11015
Merge branch 'develop' into ticket/11015

* develop:
  [ticket/11012] Fix php_ext change in mock_extension_manager
  [ticket/11012] Normalize $phpEx member vars to $php_ext
  [ticket/11002] Use translating option to rename the Etc/GMT options

Conflicts:
	phpBB/includes/extension/manager.php
[ticket/11015] Correctly set sql_layer in driver base class

PHPBB3-11015
[ticket/11015] Fix connection manager db driver selection

PHPBB3-11015
[ticket/11015] Fix db connection type hint in lock_db

PHPBB3-11015
[ticket/11015] Fix configuration for travis

PHPBB3-11015
[ticket/10875] Remove useless assignment from phpbb_cache_driver_memory.

sql_save() no longer takes $query_result as a reference, thus this assignment
is a no-op.

PHPBB3-10875
[ticket/10875] Fix return value of phpbb_cache_driver_null::sql_save().

phpbb_cache_driver_null::sql_save() has to return $query_result as is instead
of null.

PHPBB3-10875
[ticket/10875] Fix phpbb_mock_cache::sql_save() to return $query_result.

PHPBB3-10875
[ticket/10875] Fix logic in phpbb_cache_driver_file::sql_save().

Previously (develop-olympus) $query_result was passed via reference into
sql_save(). Now the (possibly changed) result is returned by value.
Adjust logic to take this change into account correctly.

PHPBB3-10875
[ticket/10875] Add comment about cache's sql_load() method.

PHPBB3-10875
[ticket/11162] Extract existing behavior into a function and add a test.

PHPBB3-11162
[ticket/11162] Use integer casting instead of SQL escape.

PHPBB3-11162
[ticket/11162] Rename count variable name to remaining_rows.

PHPBB3-11162
[ticket/11162] Make count function upper case.

PHPBB3-11162
Merge remote-tracking branch 'upstream/develop' into ticket/11015

* upstream/develop: (666 commits)
  [ticket/11077] Remove code from old global announcements system
  [ticket/11189] Replace DEBUG_EXTRA with DEBUG
  [ticket/11189] Always log critical errors when in cron or in image output
  [ticket/11187] Added a blank array to fix errors in functional tests
  [ticket/10780] Make L_COLON available in the installer.
  [ticket/11183] Remove $load_extensions and weird dl() calls
  [ticket/10970] Added extra documentation to parse_dynamic_path.
  [ticket/10939] Added documentation for phpbb_request::file
  [ticket/10865] Use code tags for install/database_update.php.
  [ticket/10865] Should have been a slash.
  [ticket/10780] Use L_COLON on LDAP page.
  [ticket/10780] Use L_COLON on search backend ACP pages.
  [ticket/10780] Use L_COLON for "download all attachments".
  [ticket/10780] Use colon from language in ucp_pm_compose.php where possible.
  [ticket/10780] Replace colons in phpBB/adm/style/acp_ext_details.html.
  [ticket/10780] Replace colon usage in adm template output with {L_COLON}
  [ticket/10780] Replace colon usage in template output with {L_COLON}
  [ticket/11181] Bump PHP requirement to 5.3.3 (from 5.3.2) [develop-olympus]
  [ticket/11181] Bump PHP requirement to 5.3.3 (from 5.3.2)
  [ticket/10172] Show prosilver birthday list even if there are no birthdays.
  ...

Conflicts:
	phpBB/common.php
	phpBB/download/file.php
	phpBB/includes/db/dbal.php
	phpBB/includes/db/firebird.php
	phpBB/includes/db/mssql.php
	phpBB/includes/db/mssql_odbc.php
	phpBB/includes/db/mssqlnative.php
	phpBB/includes/db/mysql.php
	phpBB/includes/db/mysqli.php
	phpBB/includes/db/oracle.php
	phpBB/includes/db/postgres.php
	phpBB/includes/db/sqlite.php
	phpBB/includes/extension/manager.php
	phpBB/install/database_update.php
[ticket/11015] Remove old dbal classes

PHPBB3-11015
Merge remote-tracking branch 'upstream/develop' into ticket/11015

* upstream/develop: (31 commits)
  [ticket/11194] Service tag data is stored in an array so access it correctly
  [ticket/11193] Instantiate a single collection_pass for all collections
  [ticket/11152] Basic tests for the container functions
  [ticket/11152] Compile the install container
  [ticket/11152] Throw error if services.yml is missing
  [ticket/11152] Remove old container processor calls
  [ticket/11152] Use realpath in container extensions consistently
  [ticket/11152] Rename collection to collection_pass
  [ticket/11152] Remove @api docblocks
  [ticket/11152] Create separate function for debug-dependent container
  [ticket/11152] Change phpbb_di_pass_cron to generic phpbb_di_pass_collection
  [ticket/11152] Convert cron_task_collection to generic di_service_collection
  [ticket/11152] Use relative root path in container, one dumped container per path
  [ticket/11152] Move container functions to a separate function file
  [feature/compiled-dic] Rename $phpEx to $php_ext in new code
  [feature/compiled-dic] Use an absolute path for core.root_path parameter
  [feature/compiled-dic] Update the composer.lock file
  [feature/compiled-dic] Purge cache to make ext services available right away
  [feature/compiled-dic] Fix root path when container is created after install
  [feature/compiled-dic] Remove old test
  ...
[ticket/11015] Fixup some things from the big merge

PHPBB3-11015