Add a script to generate an unpacked instance of the waf all-in-one blob.

Reference: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=654469

unpack_waf.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+
+#    unpack_waf - generate an unpacked instance of the waf all-in-one blob
+#    Copyright (C) 2012 Alessio Treglia <alessio@debian.org>
+#    Based on: http://wiki.debian.org/UnpackWaf
+#
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 2 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License along
+#    with this program; if not, write to the Free Software Foundation, Inc.,
+#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+set -e
+
+echo -n "Unpacking waf... "
+./waf --help &>/dev/null
+WAFDIR=`ls .waf-*/`
+mv .waf-*/${WAFDIR} ${WAFDIR}
+sed -i '/^#==>$/,$d' waf
+rmdir .waf-*
+echo "OK."
+
+echo -n "Purging .pyc files... "
+find ${WAFDIR} -name "*.pyc" -delete
+echo "OK."