companion_tools/autoconf: add autoconf tool

Initial version of adding autoconf as a companion tool.

Signed-off-by: Richard Strand <richard.strand@icomera.com>
[yann.morin.1998@anciens.enib.fr: use generic overide tools dir]
[yann.morin.1998@anciens.enib.fr: update menu entries]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

#!/bin/sh

# Needed for systems without gettext

$* -xc -o /dev/null - > /dev/null 2>&1 << EOF

#include <libintl.h>

int main()

{

	gettext("");

	return 0;

}

EOF

if [ ! "$?" -eq "0"  ]; then

	echo -DKBUILD_NO_NLS;

fi