Description: fix interpreter of givaro-makefile

--- a/givaro-makefile.in
+++ b/givaro-makefile.in
@@ -1,4 +1,4 @@
-#! /bin/sh
+#!/usr/bin/make -f
 # Copyright(c)'1994-2009 by The Givaro group
 # This file is part of Givaro.
 # Givaro is governed by the CeCILL-B license under French law