it from source control: http://www.mediawiki.org/wiki/Download_from_SVN
=== Configuration changes in 1.17 ===
-* (bug 12797) Allow adjusting of default gallery display options:
- $wgGalleryImagesPerRow, $wgGalleryImageWidth, $wgGalleryImageHeight
- $wgGalleryCaptionLength, $wgGalleryShowBytes
* DatabaseFunctions.php that was needed for compatibility with pre-1.3 extensions
has been removed.