Changes to base

Changes to base:
commit b93947c760d7d89434b13e0e9dc504108c75c6d1
Author: Herbert Valerio Riedel <hvr@gnu.org>
Date:   Thu Oct 24 22:19:23 2013 +0200

    Don't include `{Event,HsUnix}Config.h` in source distribution

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