This patch allows projects with per-version sub-directories to be
handled (e.g., MIT Scheme, MyServer, IceCat, etc.) It also makes sure
alpha releases are discarded (e.g., "gnupg-2.1.0beta3") as well as
unrelated files (e.g., "TeXmacs-600dpi-fonts.tar.gz").
* maintainers/scripts/gnu/gnupdate (ftp-list): Return a list of entries
where each entry indicates the file type in addition to the file name.
(releases): Adjust accordingly. Recurse into sub-directories and
return a list of name/directory pairs. Catch `ftp-error' instead
of everything.
[release-rx]: Adjust to work with TeXmacs.
[alpha-rx]: New variable.
[sans-extension]: New procedure.
(latest-release): Adjust accordingly.
(%package-name-rx): New variable.
(package/version): Use it.
(packages-to-update): Adjust accordingly. Use the directory returned
by `latest-release'.
[unpack]: New procedure.
(fetch-gnu): Add a `directory' parameter; use it.
svn path=/nixpkgs/trunk/; revision=26075
7a99d54ca7