Version 4.5.17 of mod_wsgi can be obtained from:
https://codeload.github.com/GrahamDumpleton/mod_wsgi/tar.gz/4.5.17
Addition in mod_wsgi-express of --allow-override option in 4.5.16 caused --url-alias option to break.
mod_wsgi-express
--allow-override
--url-alias