Makefile.in: Use only standard options compatible with BSD install

Don't use options specific to FSF's coreutils install.

Signed-off-by: Titus von Boxberg <titus@v9g.de>
Message-Id: <51587db99510a9ec08f8.1352226968@tschetwerikow.boxberg.lan>
Patchwork-Id: 197532

 #!/bin/sh

 set -e

 printf "Running autoconf...\n"

 autoconf -Wall --force

 printf "Done. You may now run:\n    ./configure\n"