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

 reporter_name="dsreed on freenode/#crosstool-ng"

 reporter_url=""

 reporter_comment="Enables experimental support for VFP/NEON hardware floating point."