Squashed 'third_party/boostorg/preprocessor/' content from commit 56090c5

Change-Id: I8c0a13225778c3751a35945439d5304bd9e639ef
git-subtree-dir: third_party/boostorg/preprocessor
git-subtree-split: 56090c56b5c78418b6dbe8c3c2ba576395152f83
diff --git a/include/boost/preprocessor/debug/line.hpp b/include/boost/preprocessor/debug/line.hpp
new file mode 100644
index 0000000..4dd1013
--- /dev/null
+++ b/include/boost/preprocessor/debug/line.hpp
@@ -0,0 +1,35 @@
+# /* **************************************************************************
+#  *                                                                          *
+#  *     (C) Copyright Paul Mensonides 2002.
+#  *     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 for most recent version. */
+#
+# ifndef BOOST_PREPROCESSOR_DEBUG_LINE_HPP
+# define BOOST_PREPROCESSOR_DEBUG_LINE_HPP
+#
+# include <boost/preprocessor/cat.hpp>
+# include <boost/preprocessor/config/config.hpp>
+# include <boost/preprocessor/iteration/iterate.hpp>
+# include <boost/preprocessor/stringize.hpp>
+#
+# /* BOOST_PP_LINE */
+#
+# if BOOST_PP_CONFIG_EXTENDED_LINE_INFO
+#    define BOOST_PP_LINE(line, file) line BOOST_PP_CAT(BOOST_PP_LINE_, BOOST_PP_IS_ITERATING)(file)
+#    define BOOST_PP_LINE_BOOST_PP_IS_ITERATING(file) #file
+#    define BOOST_PP_LINE_1(file) BOOST_PP_STRINGIZE(file BOOST_PP_CAT(BOOST_PP_LINE_I_, BOOST_PP_ITERATION_DEPTH())())
+#    define BOOST_PP_LINE_I_1() [BOOST_PP_FRAME_ITERATION(1)]
+#    define BOOST_PP_LINE_I_2() BOOST_PP_LINE_I_1()[BOOST_PP_FRAME_ITERATION(2)]
+#    define BOOST_PP_LINE_I_3() BOOST_PP_LINE_I_2()[BOOST_PP_FRAME_ITERATION(3)]
+#    define BOOST_PP_LINE_I_4() BOOST_PP_LINE_I_3()[BOOST_PP_FRAME_ITERATION(4)]
+#    define BOOST_PP_LINE_I_5() BOOST_PP_LINE_I_4()[BOOST_PP_FRAME_ITERATION(5)]
+# else
+#    define BOOST_PP_LINE(line, file) line __FILE__
+# endif
+#
+# endif