Hi Guix,

attached are patches to add fastx-toolkit, and its dependency
libgtextutils.

"fastx-toolkit" installs three m4 files to "$out/share/aclocal", and
libgtextutils installs an empty "$out/share/aclocal" directoy.  I
reported this upstream, but I did not add a phase to remove these files,
because I think it's not a big deal.  Is this okay or should I modify
the sources to avoid installing these files?

~~ Ricardo