Update aux files `config.{guess,sub}` and `install-sh`

This updates the files to the versions bundled with GNU automake 1.13.3

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Update `bug-reports` URL and version constraints

This also sets the Hackage `Category` to `Prelude` as `base`
obviously provides a `Prelude` module.

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