I came across this blog post about changes in the Google Code hosting. This is kind of sad, since the project relied heavily on the download section for the game files. Now I have to find a place for them. Google Drive is mentioned as a candidate.
In theory, this should not affect the self-update capability of the game, since the version check URL already points into the SVN, and the inner links may point to anywhere I choose. Hopefully, the Google Drive links are static and don't get disabled for too much traffic.