To add a new namespace, just set $wgExtraNamespaces in LocalSettings.php.
Custom namespaces must begin at 100.
This is primarily intended to let us add a bunch of international versions
of the "Help:" namespace on Meta, so we can finally have a single place for
all documentation and easily dump/import it to other wikis.
** Database constructor calling sequence, and Database::newFromParams()
** Including flags in the server initialisation structs
** Support for setting appropriate flags from legacy globals in Setup.php
** Moved some defines to Define.php so that they can be used in LocalSettings.php, most importantly the bit field constants
* Changes related to post-parse link colouring
** Turn the link cache back on when using it for updating the links table
** No longer need to call preFill() on page view
* Better synchronisation of slave servers
** Rearranged getConnection()
** System for beginning and committing transactions when multiple connections are open
** wfAbruptExit() commits transactions, wfErrorExit() does not. Various functions changed to use wfErrorAbort()
* Allowed reporting of database errors during deferred updates by moving them above output()
currently which make it a dubious thing to try to do). Fix HTML for
error display on move. Add error class to style sheets. Fix error call
in protect. Remove dupe function that was moved from skin to output.
* Split MediaWiki namespace into MediaWiki and Template (requires changes to all language files)
* Purge links to on edit of Template namespace
* General refactoring of purging and cache invalidation code
* Converted many instances of globals from the query to $_REQUEST
* Renamed near-useless Title::getURL() to Title::getPartialURL()
* Created new Title::getURL(), to replace wfLocalUrl, wfLocalUrlE, wfFullUrl and wfFullUrlE. Replaced most instances throughout the code
* In Parser.php, generalised stripping of <nowiki>, <pre> and <math> to allow more general use such as nesting
* Moved body of Article::preSaveTransform to Parser.php
* Put lots of comments in Title.php
