Merging changes from pull.
#ifndef BOOST_MPL_LIMITS_ARITY_HPP_INCLUDED
#define BOOST_MPL_LIMITS_ARITY_HPP_INCLUDED
// Copyright Aleksey Gurtovoy 2000-2004
//
// 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/mpl for documentation.
// $Id: arity.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
// $Revision: 49267 $
#if !defined(BOOST_MPL_LIMIT_METAFUNCTION_ARITY)
# define BOOST_MPL_LIMIT_METAFUNCTION_ARITY 5
#endif
#endif // BOOST_MPL_LIMITS_ARITY_HPP_INCLUDED