- Patch #342366 by John Morahan, Dave Reid, Damien Tournoud: fixed replacement of unnamed placeholders in SQLite.

- Patch #341872 by mayer, catch: fixed bug in database conversion and added a missing test for taxonomy_term_save().

- Patch #107824 by Dave Reid, AlexisWilke et al: convert certain URL fields from VARCHAR to TEXT to avoid errors.

- Patch #335086 by recidive: rename node, filter and comment module tables to singular for consistency.  Oh my.

- Patch #327269 by c960657: when drupal_page_cache_header() compares the client's If-Modified-Since header to $cache->created, it assumed a certain date format.  However, HTTP/1.1 allows several variations of the date format, i.e. the same time may be represented in slightly different ways. If the client sends the date in a different format than the one generated by Drupal, it would never receive a 304 Not Modified response.  Also added a good amount of tests for the drupal_page_cache_header() code.

- Patch #330582 by Darren Oh, c960657 et al: better API for retrieving HTTP headers and working with HTTP headers in tests.

#340052 by justinrandell: Speed up SimpleTest by 15,000 orders of magnitude by pre-loading the registry.

#340568 by Damien Tournoud: in some versions of SQLite, SELECT DISINCT(field) will return '(field)' as the field name.

#340500 by justinrandell: Fix silliness in install.inc that was loading the db system twice for no apparent reason.

- Patch #337820 by Dave Reid, Damien Tournoud, et al: rename menu path 'logout' to 'user/logout'.  For real now.

- Patch #314870 by drewish: removed some code that accidentically got committed with api.php and that broke the tests.

- Patch #263445 by Dave Reid, merlinofchaos: replace improper use of drupal_to_js() with drupal_json().

- Patch #338586 by Damien Tournoud: fix undefined function call in DatabaseSchema_pgsql::addField().