Heterogeneous deployment/status

2011-06-02
Priyanka Dhanda prepared a project plan and did the initial preparatory work. A prototype will soon be set up.

2011-06-07
Done: In Progress: Next steps:
 * MWVersion.php and changes to CommonSettings.php checked into svn+ssh://svn.wikimedia.org/svnroot/mediawiki/trunk/tools/mwmultiversion
 * prototype.wikimedia.org is working with these changes
 * test.prototype.wikimedia.org is running trunk and
 * en.prototype.wikimedia.org is running on 1.17wmf1
 * Document all the manual changes that were needed in a README
 * Instead of duplicate host2db code set and env variable MW_DBNAME and use it in CommonSettings.php
 * Use MW_DBNAME in maintenance/Maintenance.php in loadWikimediaSettings
 * Test maintenance scripts
 * Figure out how to make $wgExtensionAssetsPath and $wgStyleSheetPath work with correct versions on bits.wikimedia.org