fixed permissions check for executable files exported on systems where 'ls' reports alternative access characters
# /* Copyright (C) 2001
# * Housemarque Oy
# * http://www.housemarque.com
# *
# * 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)
# */
#
# /* Revised by Paul Mensonides (2002) */
#
# /* See http://www.boost.org for most recent version. */
#
# ifndef BOOST_PREPROCESSOR_STRINGIZE_HPP
# define BOOST_PREPROCESSOR_STRINGIZE_HPP
#
# include <boost/preprocessor/config/config.hpp>
#
# /* BOOST_PP_STRINGIZE */
#
# if BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MSVC()
# define BOOST_PP_STRINGIZE(text) BOOST_PP_STRINGIZE_A((text))
# define BOOST_PP_STRINGIZE_A(arg) BOOST_PP_STRINGIZE_I arg
# elif BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_MWCC()
# define BOOST_PP_STRINGIZE(text) BOOST_PP_STRINGIZE_OO((text))
# define BOOST_PP_STRINGIZE_OO(par) BOOST_PP_STRINGIZE_I ## par
# else
# define BOOST_PP_STRINGIZE(text) BOOST_PP_STRINGIZE_I(text)
# endif
#
# define BOOST_PP_STRINGIZE_I(text) #text
#
# endif