* Fix parsing of the three major entry points (index.php, api.php, load.php) back to PHP 4.4.9. We don't care what happens if you actually try to run these files on old versions, but the entry files need to parse correctly.
* consign /includes/templates/PHP4.php and /includes/templates/NoLocalSettings.php to the fiery pit of hell where they belong.
* Prevent loading of any other files for PHP < 5. WebStart.php was rendered unparseable in PHP 4 by the introduction of try/catch blocks in r85327.
* Die outright with a pretty error message on PHP < 5.2.3 as well as PHP 4. All versions of PHP below that throw parse errors of various sorts.
* Reimplement wfDie() to provide an entry-point-dependent die-with-readable-error-message function (for instance, we want a pretty human-readable page in index.php, something wrapped in CSS/JS /*...*/ comment block in load.php, etc).
* Standardise the appearance of the catastrophic errors thrown at the top of the stack with the ones lower down (exception-within-exception, etc). There isn't really a way to do this without duplication, AFAICT.
* Internalise $title in MediaWiki base class
* Fix access fatal in SpecialPage by getting the context from the MediaWiki base class rather than the OutputPage
* Fix a couple of typos in RequestContext which would have thrown errors/fatals if anyone had ever called them.
* Add visibility to MediaWiki::*() methods.
* Refactor out MediaWiki::preliminaryChecks(), was actually just one preliminary check :D
* maxlag is a property of the database, not the wiki, so MediaWiki::checkMaxLag() doesn't belong. Since it was only called in index.php I just expanded it there, it's only a trivial wrapper anyway.
* Run stylize.php over code.
Mostly seems to be formatting tweaks, loss of useful debug log output, and mysterious unexplained changes.
If some of these tweaks actually are based on profiling data, please provide details, such as "rearranging this call reduces service time from 80ms to 50ms for client cache hits on my machine" or whatever.
* group master queries with other queries in "SQL Queries" in profileinfo.php
* end 'main-misc-setup' section before executing ajax requests so that they don't get closed by the profiler for ajax requests.
* 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
These are just globals, and will never be anything other than the globals, so just use them...
Works around mysterious segfault we started having on some wikis, for no apparent reason, and simplifies ugly code. Sigh.
* Document function parameter and undocumented functions
* Move use of global settings to localized one setted in index.php
* fix whitespaces
* Use __METHOD__ instead of hardcoded method names
* Call MediaWiki::articleFromTitle() staticly
