- Patch #318016 by Dave Reid: step one to standardizing type-hinting.

includes/database/database.inc

includes/database/mysql/database.inc

includes/database/pgsql/database.inc

includes/database/pgsql/query.inc

includes/database/prefetch.inc

includes/database/query.inc

includes/database/select.inc

includes/database/sqlite/database.inc

modules/simpletest/drupal_web_test_case.php

modules/simpletest/tests/cache.test

modules/simpletest/tests/registry.test

modules/system/system.test