Recognize a --skip option on pm-enable drush command. This option skips the download of the firephp library.

#1022418. Improve a.d.o-compatible documentation for hook_node_access_explain() and document hook_node_access_acknowledge().

Avoid "Notice: Undefined property: stdClass::$timestamp in _drupal_session_write()" watchdog entry when switching users.

Remove unused devel/source page callback. Theme developer can implement its own if it wants to keep this feature.

'restrict access' => TRUE for various permissions. See http://drupal.org/update/modules/6/7#permissions_restrict_access

Remove translations directory as per http://drupal.org/node/188986. Translations are now handled outside of CVS.

Suppress "Cannot modify header information - headers already sent" warning if we caused it ourselves.