Hi Guix,

for the Bioconductor importer extension to the CRAN importer I need our
HTTP client to support basic authentication as the DESCRIPTION files are
only available on the SVN web interface, which requires authentication
with a fixed username and password.

The attached patch adds this feature to the ‘http-fetch’ procedure.  Now
“protected” URLs like

    https://readonly:readonly@hedgehog.fhcrc.org/bioconductor/branches/RELEASE_3_2/madman/Rpacks/genomation/DESCRIPTION

can be downloaded.

~~ Ricardo