$NetBSD: patch-SConscript,v 1.2 2021/11/12 16:17:20 nia Exp $

Add missing SCons include.

--- SConscript.orig	2021-11-12 15:54:16.512135933 +0000
+++ SConscript
@@ -2,6 +2,7 @@
 # coding: utf-8
 import os, string, sys, shutil, math
 from tools import *
+import SCons
 
 env = GpickEnvironment(ENV = os.environ, BUILDERS = {'WriteNsisVersion': Builder(action = WriteNsisVersion, suffix = ".nsi")})