* Wrote two concrete implementations. LBFactory_Simple is for general installations. LBFactory_Multi will replace the runtime configuration used on Wikimedia and allow load-balanced connections to any DB.
* Ported Special:Userrights, CentralAuth and OAI audit to the LBFactory system.
* Added ForeignDBViaLBRepo, a file repository which uses LBFactory.
* Removed $wgLoadBalancer and $wgAlternateMaster
* Improved the query group concept to allow failover and lag control
* Improved getReaderIndex(), it will now try all servers before waiting, instead of waiting after each.
* Removed the $fail parameter to getConnection(), obsolete.
* Removed the useless force() function.
* Abstracted the replication position interface to allow for future non-MySQL support.
* Rearranged Database.php. Added a few debugging features.
* Removed ancient benet-specific hack from waitForSlave.php
* Made it possible to configure the parser class being used, via $wgParserConf.
* Moved defines from the top of Parser.php to either class constants or Defines.php
* Added Parser_DiffTest, a differential parser class for regression testing
* Added Parser_OldPP, a parser class which operates like the parser before this commit. I made one breaking change: a bugfix to avoid losing whitespace when adding MWTEMPLATESECTION markers.
* Made internal tidy work with PHP 5
* Added the ability to supply a hook for template fetching via ParserOptions. This is handy for testing.
* Updated parserTests.txt to account for the various breaking changes I made. Removed a few parser tests that no longer test for anything useful.
*Allow blocking of users to hide names
*Implement revision deletion for images/deleted files/deleted revs
*Log deletion set off for now
*Add 'hidden' file dir
*Dissallow merging via undelete (which was inefficient and hard to reverse)
*Use restore points and diffs to special:undelete
*Add a special page to merge pages
*Get changeslist to use tables to avoid ugly formatting
*Add logs into RC for rebuildrecentchanges.php
*Add private logs
*List private logs at specialpages
*Tweak/add some deletion and merge messages
* Ported file delete/restore to the filerepo framework. Some user-visible changes in error reporting.
* $wgSaveDeletedFiles has been removed, the feature is now enabled unconditionally. Added a "deleted" directory for the default location, protected by a .htaccess file and the practical obscurity of content hashes.
* Fixed bug 2735: "Preview" shown in title bar for action=submit on special pages
* Removed "restore" links from the deletion log embedded in Special:Undelete
* Added img_sha1/oi_sha1 fields, preserved through upload, delete and restore
* Referenced the new oi_metadata etc. fields to preserve metadata across upload and delete/restore.
* Rename 'licence' to 'license' for consistency with the rest of the code.
* The preview code was assuming simple templates with no parameters and no subst:s, which failed on most of the selections used now on Commons. Now doing a full pre-save transform and parse on {{$license}}, just as will be done on the final save.
* When selecting 'None' again after another option, the preview pane is now cleared.
A fun 'todo' might be to also pass the currently selected filename, if any, to the license preview. Some of the templates in use attempt to use the current-page-name variables to include a self-link. At the moment using a hardcoded 'Image:Sample.jpg' for the virtual title on the preview rendering.
* Added support for static member functions as AJAX callbacks.
* Moved all upload-related javascript to upload.js.
* Needs artwork, see TODO in upload.js.
* Removed UploadForm::showSuccess() as per wikitech-l discussion. Redirect to description page unconditionally.
* Added support for configuration of an arbitrary number of commons-style file repositories.
* Split Image.php into filerepo/File.php and filerepo/LocalFile.php
* Renamed Image::getImagePath() to File::getPath()
* Added initial support for timestamp-based file fetching (OldLocalFile), to be expanded upon by aaron.
* Changed the interface for Image/File object creation: use wfFindFile() or wfLocalFile() depending on semantics
* ImageGallery::add() now accepts a title object as the first parameter
* Moved file handling operations on upload from SpecialUpload to File
* Removed path-related functions from ImageFunctions.php. Removed static path accessors from File.
* Added a Content-Disposition header to thumb.php output
* Improved thumb.php error handling
* Updated the unit test suite to kind of partially work with modern computers. RunTests.php doesn't work just yet. Fixed an actual regression that the test suite detected -- moved some defines to Defines.php where they will be loaded consistently.
Cleaned up the new URL parsing code a bit, now able to recognize both $wgActionPaths and $wgVariantArticlePath and interpolate those variables.
Moved that bit into WebRequest::interpolateTitle() function which is called after $wgContLang stub object is created, so it can be used to get the variant list.
I'm not totally happy with all this code, but it works. The variant bits generally creep me out.
Caches for wikis with table prefixes will be lost on upgrade, caches for wikis without table prefixes will be preserved. Custom cache keys in extensions can be migrated at leisure. Extensions which write to core cache keys should be migrated ASAP, as I have done with Special:Makesysop.
* 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.
* Made autoloader work for unserialize()
* Made XmlFunctions.php and HttpFunctions.php autoloadable modules, via Http:: and Xml::
* Made Image class autoloadable, global functions moved to ImageFunctions.php where they can be loaded on every invocation.
* Removed some unnecessary require_once() calls
* Deferred $wgValidSkinNames initialisation
* Fixed a couple of silly construct/initialise splits. My idea from C++ experience, bad practice in PHP.
* Deferred skin initialisation in ParserOptions
* Removed $wgMwRedir during an attempt to make MagicWord autoloadable. Didn't complete that, but removing the global is still the right direction.
