File no-env-trampoline.diff of Package scheme48

We don't want to use env in the config because update-alternatives is handling the
relevant binary.

Index: scheme48/build/scheme48-config.in
===================================================================
--- scheme48.orig/build/scheme48-config.in	2013-03-13 10:14:08.000000000 +0100
+++ scheme48/build/scheme48-config.in	2013-03-13 10:14:08.000000000 +0100
@@ -1,4 +1,4 @@
-#! /usr/bin/env scheme-srfi-7
+#! /usr/bin/scheme-srfi-7
 
 ; Part of Scheme 48 1.9.  See file COPYING for notices and license.