Fix mulled-test fails on uppercase in top dir name
Fix mulled-test fails on uppercase in top dir name

The generated URIs of the form `file://home/user/...` indicate that `home` is the hostname (see RFC8089). While this works /mostly/ because most implementations tolerate this syntax, somewhere within `conda build` the hostname portion of the URI is normalized and becomes lowercase. Thus, `/Users/username`, which became `file://User/username`, was eventually turned into `file://user/username` and then `/user/username`, which won't be found.

As per RFC, `file:/home/user` would be correct as well, but conda does not recognize that as a URI at all. 

The call-path is rather far away from here, going through galaxy, involucro, docker, and eventually conda-build.
bioconda/bioconda-utils,bioconda/bioconda-utils,bioconda/bioconda-utils