package nsis: fixed build failure

Thanks to <free.man.uu@gmail.com>

src/nsis-1-fixes.patch

@@ -1,9 +1,16 @@
 This file is part of MXE.
 See index.html for further information.
 
+From 1cc3dd0dfd47bab82e06be916f9e57ef783406f9 Mon Sep 17 00:00:00 2001
+From: Mark Brand <mabrand@mabrand.nl>
+Date: Sun, 12 Aug 2012 12:33:26 +0200
+Subject: [PATCH 1/2] explicit mingw cross prefix
+
 This patch has been taken from:
 http://sourceforge.net/tracker/index.php?func=detail&aid=3305366&group_id=22049&atid=373085
 
+diff --git a/SCons/Tools/crossmingw.py b/SCons/Tools/crossmingw.py
+index d27e01c..fef9150 100755
 --- a/SCons/Tools/crossmingw.py
 +++ b/SCons/Tools/crossmingw.py
 @@ -61,6 +61,9 @@ prefixes = SCons.Util.Split("""
@@ -37,3 +44,28 @@ index 80872bc..4f113dd 100755
  
  Export('defenv')
  
+-- 
+1.7.10.4
+
+
+From 7df0fa80a65279ee7d99da8ec6abdddff7e040b0 Mon Sep 17 00:00:00 2001
+From: freeman <free.man.uu@gmail.com>
+Date: Sun, 12 Aug 2012 12:36:39 +0200
+Subject: [PATCH 2/2] add missing header
+
+
+diff --git a/Source/util.h b/Source/util.h
+index 4259a6a..664923e 100755
+--- a/Source/util.h
++++ b/Source/util.h
+@@ -25,6 +25,7 @@
+ #ifndef _WIN32
+ #  include <iconv.h>
+ #  include <stdio.h>
++#  include <unistd.h>
+ #endif
+ 
+ 
+-- 
+1.7.10.4
+