- Patch by Gerhard: move the updates to database/updates.inc so packaging
  systems can by-pass update.php.

- Patch 6012 by Adrian: syncs the PostgreSQL port with the current state of HEAD,
  and adds a user notice to add the throttle and bootstrap columns to the
  system table manually, else update.php will not run.  The message includes the
  SQL statements required for both MySQL and PostgreSQL.

- Patch by Killes: drop the 'attributes' field from the 'users' table.  It
  is no longer used.

- Added the possibility to reorder filters.  Patch by UnConeD.

- Patch 5330 by Adrian: PostgreSQL updates and fixes.

 - Adds drupal_set_header() and drupal_get_headers().
 - Cache now stores custom headers.
 - Replace theme_head() with drupal_get_html_head(), added drupal_set_html_head().
 - Added RSS autodiscover links to node, blog and taxonomy pages.

Round 3 of aggregator improvements:

 - Added support for new tags:
   + Optinal feed image: <image> tag.
   + Dublin core dates: <dc:date> <dcterms:created>, <dcterms:issued>,
     <dcterms:modified>.
 - Usability improvements:
   + On the administration page, made the feed/bundle titles link
     to the feeds/bundles' pages.  On the feed/bundle's page, made
     the 'Last updated' field link to the administration page.
   + Moved the 'syndication' menu one level down.
 - Updated some content sensitive help.
 - Further improved themeability.
 - Fixed some invalid HTML.

- Many excellent news aggregator improvements by Kjartan:
    + Added drupal_http_request().
    + Replaced rssfeeds with OPML feed subscription list.
    + Added support for pubDate.
    + Added support for conditional gets using ETag and Last-Modified.

- Patch 0185 by Jeremy: made it possible to automatically disable modules when
  under heave load.

- Patch #177 by UnConeD: updated MySQL backend to use 'longtext' instead of
  'text'.  This should depricate 0112.HEAD.killes.fix-unserialize-revision.patch
  and 0182.HEAD.anarcat.revisions-unserialize-failure-fallback.patch.

- Made it possible to auto-throttle blocks.  That is, blocks can be
  configured to be disabled when under excessive load.  Patch by Jeremy.

- Improved module loading when serving cached pages.  Moshe's bootstrap patch.

- Used legend and fieldset tags for the configuration page.

- Added an update to grow the 'name' field of the variables table.  Patch
  by Gerhard.

- Bugfix: don't set a name and e-mail address for the anonymous user.  Fixes
  bug #3740.

- Bugfix: renamed the 'statistics' table to 'node_counter' as 'statistics' is
  a reserved SQL keyword.  Required for both PostgreSQL and MSSQL.  Patch by
  Adrian.

- Bugfix: renamed the 'path' table to 'url_alias' as 'path' is a reserved SQL
  keyword.  Required for both PostgreSQL and MSSQL.  Patch by Adrian.

- Some clarifications to the upgrade script's guidelines/documentation based
  on observing upgrade questions.

- Bugfix: fixed a duplicate and broken link to drupal.org.  Patch by Matt.

- Bugfix: fixed two problems with adding and deleting access rules.  Patch by
  Moshe.  Requires database upgrade.

- Fixed translation bugs with statistics module.  Patch by Gabor.

- Removed 'homepage' field from user table.  Patch by Gabor.

- Added 'real name' field to the profile module.  Patch by Gabor.

- Made it easier to by-pass the access check.  Modified patch from Steven.

- Added a note about having to create the session table manually when
  upgrading from Drupal 4.2.0.

- Modifies path.module to get rid of pgsql reserved word.  Patch by Adrian.

- Updates database.pgsql and database.mysql to work with current cvs. Patch
  by Adrian.

- Updates update.php to be able to update postgres from 4.2 to current.
  Patch by Adrian.

- Small fixes by me.

- Some URL alias fixes by Matt.

- Added PostgreSQL support to the update script.  Patch by Adrian.

- Making Adrian the new PostgreSQL maintainer.

- Added $Id$ tags.  Patch by Chris.

- Wrapped the table names in brackets.  Patch by Bart.

- Patch by Bart Jansen:

  <quote>

  This adds session support for anonymous users and fixes a bug/typo.

    1. changed rid for user #0 from 0 to 1 (rid 1 == anonymous user) to make
       inner join work.

    2. replaced "if ($user .." by "if ($user->uid .." because now $user is
       always set (my previous change probably caused this).

    3. db_next_id("user_uid") -> db_next_id("users_uid");
  </quote>

  I repeat:

  "This adds session support for anonymous users and fixes a bug/typo."

- Gerhard's uid 0 patches.  These patches bring various performance
  improvements.  Requires a database update.

- Tested and committed Kjartan's performance patches.  (Fixed the access check
  in update.php though.)

  PostgreSQL and MSSQL database scheme as well.

- Made sure the update script updates the correct tables when database
  prefixing is enabled.  Patch by Bart Jansens.

- Improved the breadcrumb navigation of the book and the forum module as per
  Keith Instone's suggestions.

- Updated page titles (or block titles) and links to match.  Suggested by
  Keith Instone.

- Added missing 'thread' field to the comment table of the MySQL database scheme.
  Fixes bug #2590.

- Committed Jeremy's session patch: this brings us one step closer to having
  session for anonymous users.

- Rewrote handling of forum icons and added default icons made by Steven
  Wittens.

- Renamed some column titles in the forum module as per Moshe's suggestion.

- Introduced a 'more-link' class to position the 'more' links.  Removed
  hard-coded markup from the modules.

- Fixed bug in import module: the theme functions called a non-existing
  function.