Fix merging bug where downstream items somtimes got ignored if they appear after an upstream-only item. Also, reduce the severity of the validation error if a tech-domain is not recognised on a non-Foundation package.
#ifndef BOOST_MEM_FN_HPP_INCLUDED
#define BOOST_MEM_FN_HPP_INCLUDED
// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
//
// mem_fn.hpp - a generalization of std::mem_fun[_ref]
//
// Copyright (c) 2009 Peter Dimov
//
// Distributed under the Boost Software License, Version 1.0.
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
//
// See http://www.boost.org/libs/bind/mem_fn.html for documentation.
//
#include <boost/bind/mem_fn.hpp>
#endif // #ifndef BOOST_MEM_FN_HPP_INCLUDED