Changes to filepath(2)

Changes to filepath:
commit b2bb9e7daa4e3a90c29a07ed01e56b1e93491ded
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Sat Oct 19 09:59:45 2013 +0200

    Add `cabal {check,sdist}` steps to `.travis.yml`

    ...and simplify `$PATH` handling while at it. Also, make the build-dep
    install workaround for GHCVER=6.12.3 more explicit.

    Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>

commit 05487dab4c3ca6d401c296b3e7fb5e294f495a05
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Sat Oct 19 09:55:50 2013 +0200

    Fill out `description` field in Cabal description

    This is needed to pass `cabal check`.

    Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>