OpenAFS source code is managed in a CVS repository. Anonymous access to the CVS service is available.
The latest 1.4 series sources can be obtained using the tag "openafs-stable-1_4_x". The latest 1.5 series sources can be obtained using the tag "openafs-devel-1_5_x". Replace the "x" in the tag name with a number to obtain the sources to a specific release. After checking out or updating sources from the CVS repository the command, "sh ./regen.sh", must be executed. Only then will "./configure" work properly.
For those unfamiliar with cvs: