- Patch #19590 by Moshe: lazy initialization of the theme system.  Improves
  performance of pages that don't need the theme system (such as RSS feeds)
  and makes it easier to set a custom theme.

- Tweak code style.

- Updated the start date of the updates.

  terms are matched, the query would become very slow.

- Patch #18093 by Junyor: clean up handling of image toolkit code in absence of
  any toolkits.

- Added XML-icons on forum listings.  Many people will find this useful to track updates/changes.

- Patch #19212 by chx: removed unused variables, and fixed the error reporting
  in form_file().

- Patch #19009 by chx: fixed a bug with comment replies letting one access nodes.

- Bug #18597: updated the database scheme.  Renamed poll.voters to poll.polled.

http://drupal.org/node/19012#comment-32381

- Change double to single quotes.