- Patch #320146 by pwolanin: when in offline mode, link to the admin page to take the site online again.

#320161 by Dave Reid: Fix problems with drupalGetTestFiles() that causes upload.test to break on some systems.

#320009 by Dave Reid: Remove notice about missing files[] array and prevent incompatible modules from being enabled.

#320024 by Dave Reid: Replace hardcoded drupal_required_modules() with required = TRUE in .info files.

#253569 by aaron, agentrickard, and Dave Reid: Add hook_modules_X to allow modules to react when other modules are enabled, disabled, installed, or uninstalled.

#242873 follow-up by pwolanin: Move new check_plain() check constants to bootstrap.inc so they're there in early bootstrap.