Deprecate: the project looks dead upstream, functionally incomplete, has
problems with caching, does not work with Yandex.Disk; give three months
of expiration time.

Consumers are advised to use www/cadaver' or try to port fusefs-davfs2'
instead (http://savannah.nongnu.org/projects/davfs2).

Approved by: maintainer (1 month timeout)
PR: 187485, 231927