It's specific of the wikimedia foundation. However, i guess it should be at the SVN somewhere.... :s
http://svn.wikimedia.org/viewvc/mediawiki/trunk/extensions/FixedImage/
Thank you!
It is possible maybe to add to FixedImage.php something like this: + $wgExtensionCredits['parserhook'][] = array( 'name' => 'FixedImage', 'author' => 'Brion Vibber' ); or this: + $wgExtensionCredits['parserhook'][] = array( 'name' => 'FixedImage'); ... in order to ensure that Special:Version lists all installed extensions?
All the best, Nick.