- Patch #512108 by boombatower: added a warning to educate people about the 'Clean environment' button when test run fails.

#315100 by Rob Loach, quicksketch, sun, skilip, aaron, et al: Add ability for modules to register JS/CSS libraries.

- Patch #482646 by Dave Reid et al: check for existence of ['HTTP_USER_AGENT'] for the SimpleTest user agent.

- Patch #72856 by quicksketch: on some systems, PHP's garbage collector is disabled so make sure to enable it.

- Patch #484820 by Gábor Hojtsy, yhahn, markboulton, leisareichelt, et al: initial version of the new administration toolbar.

- Patch #310139 by pwolanin, c960657: drupal_query_string_encode() should not call drupal_urlencode().

#373201 by moshe weitzman, chx, Frando, eaton: Allow renderable array properties to be passed directly to theme functions.