* Made lines from initialiseMessages() appear as list items during installation
* Moved the bulk of the localisation data from the Language*.php files to the Messages*.php files. Deleted most of the Languages*.php files.
* Introduced "stub global" framework to provide deferred initialisation of core modules.
* Removed placeholder values for $wgTitle and $wgArticle, these variables will now be null during the initialisation process, until they are set by index.php or another entry point.
* Added DBA cache type, for BDB-style caches.
* Removed custom date format functions, replacing them with a format string in the style of PHP's date(). Used string identifiers instead of integer identifiers, in both the language files and user preferences. Migration should be transparent in most cases.
* Simplified the initialisation API for LoadBalancer objects.
* Removed the broken altencoding feature.
* Moved default user options and toggles from Language to User. Language objects are still able to define default preference overrides and extra user toggles, via a slightly different interface.
* Don't include the date option in the parser cache rendering hash unless $wgUseDynamicDates is enabled.
* Merged LanguageUtf8 with Language. Removed LanguageUtf8.php.
* Removed inclusion of language files from the bottom of Language.php. This is now consistently done from Language::factory().
* Add the name of the executing maintenance script to the debug log. Start the profiler during maintenance scripts.
* Added "serialized" directory, for storing precompiled data in serialized form.
== MediaWiki Maintenance ==
The .sql scripts in this directory are not intended to be run standalone,
although this is appropriate in some cases, e.g. manual creation of blank tables
prior to an import.
Most of the PHP scripts need to be run from the command line. Prior to doing so,
ensure that the LocalSettings.php file in the directory above points to the
proper installation.
Certain scripts will require elevated access to the database. In order to
provide this, first create a MySQL user with "all" permissions on the wiki
database, and then place their username and password in an AdminSettings.php
file in the directory above. See AdminSettings.sample for specifics on this.
=== Brief explanation of files ===
A lot of the files in this directory are PHP scripts used to perform various
maintenance tasks on the wiki database, e.g. rebuilding link tables, updating
the search indices, etc. The files in the "archives" directory are used to
upgrade the database schema when updating the software. Some schema definitions
for alternative (as yet unsupported) database management systems are stored
here too.
The "storage" directory contains scripts and resources useful for working with
external storage clusters, and are not likely to be particularly useful to the
vast majority of installations. This directory does contain the compressOld
scripts, however, which can be useful for compacting old data.
=== Maintenance scripts ===
As noted above, these should be run from the command line. Not all scripts are
listed, as some are Wikimedia-specific, and some are not applicable to most
installations.
changePassword.php
Reset the password of a specified user
cleanupSpam.php
Mass-revert insertion of linkspam
deleteOldRevisions.php
Erase old revisions of pages from the database
dumpBackup.php
Backup dump script
dumpHTML.php
Produce an HTML dump of a wiki
importDump.php
XML dump importer
importImages.php
Imports images into the wiki
importTextFile.php
Imports the contents of a text file into a wiki page
nukePage.php
Wipe a page and all revisions from the database
reassignEdits.php
Reassign edits from one user to another
rebuildImages.php
Update image metadata records
rebuildMessages.php
Update the MediaWiki namespace after changing site language
rebuildtextindex.php
Rebuild the fulltext search indices
refreshLinks.php
Rebuild the link tables
removeUnusedAccounts.php
Remove user accounts which have made no edits
runJobs.php
Immediately complete all jobs in the job queue
update.php
Check and upgrade the database schema to the current version
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