User:Aaron Schulz/Swift thumbnail deploy

Swift TODO:
 * Backport LocalFilePurgeThumbnails hook and deploy it
 * Svn up and sync SwiftCloudfiles
 * Enable and deploy SwiftCloudfiles
 * Set swift config in PrivateSettings.php
 * Set 'swiftThumb' MW udp logger
 * Include swift.php in CommonSettings.php
 * Run purge-from-deletion-log script
 * Start squid changes...