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.
// boost/filesystem/exception.hpp -------------------------------------------//
// Copyright Beman Dawes 2003
// Use, modification, and distribution is subject to 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)
// This header is no long used. The contents have been moved to path.hpp.
// It is provided so that user code #includes do not have to be changed.