* Adjust UserrightsForm so that it inherits from SpecialPage; nuke HTMLForm. Since this breaks backward compatibility, renamed to UserrightsPage.
* Created SpecialPage::isRestricted() and enforced use of SpecialPage::userCanExecute() instead of hardcoded checks. These can now be overridden so that more complicated restriction systems work sanely. Used them for UserrightsPage (fixes bug 12489).
* A few random comment/documentation tweaks.
Also, update Special:Version date.
to open a XML element. It should help fix bug #5312 later on.
* XML attributes rendering now made by private Xml::expandAttributes() method
* Xml::openElement() and Xml::tags() no more rely on Xml::element() with
a null content.
* Fix wfElement() call with null content when we actually open an element.
* removing some unused global declarations.
* removing or commenting out or adding comments for unused local vars.
* Adding one or two local var declarations.
* Declaring $matches array passed to preg_match() / preg_match_all() as array() before using [not required, just have a slight preference for the explicitness].
* remove one or two pass-by-reference function declarations where the value is not modified.
* Adding some braces to if-else blocks.
* In Parser.php, stripstrate is now an object rather than an array as per r17820, so we no longer need ask for a reference to it (as in "$x =& $this->mStripState;"), and in fact it's probably just simpler to get rid of $x altogether.
* Moving some preg regexes from "" quoting to '' quoting to stop static analyzer whinging about bad escape sequences.
... up to "LinksUpdate.php" in the includes/ directory.
more or less work for now.
* user_groups ur_group is now a short string key ('sysop' etc)
* groups table is gone
* user_rights table is gone
* Permissions for groups are for now set in $wgGroupPermissions.
An in-database management system could be re-added in the future
if it's really needed, but for now it's mostly just been screwing
things up.
* Group.php and Special:Groups are deprecated; will probably die.
* User group memberships are set explicitly through addGroup and
removeGroup methods instead of being re-saved on every change to
the user record.
Group keys are migrated from user_rights at upgrade time for older wikis.
The fields in prior 1.5alpha tables were too screwed up and will need to
manually have sysops re-assigned.
The Makesysop extension will need some minor tweaks.
* Added "static groups" feature to remove memcached/DB load time
* Added i18n support, allowing names and descriptions to be optionally drawn from wfMsg/wfMsgForContent
* Fixed Special:Groups, it is now half-decent. Too many changes to list here.