Fix MPFR build to recognise the Mingw32 case.

Once we have canadian in place, Mingw32 can be a legitimate host,
so we have to recognise that along with Cygwin.

Also fix recognising Cygwin hosts.

Signed-off-by: Bart van der Meulen <bartvdrmeulen@gmail.com>

#!/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