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/assert.hpp b/include/boost/preprocessor/debug/assert.hpp
new file mode 100644
index 0000000..3380c70
--- /dev/null
+++ b/include/boost/preprocessor/debug/assert.hpp
@@ -0,0 +1,44 @@
+# /* 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_DEBUG_ASSERT_HPP
+# define BOOST_PREPROCESSOR_DEBUG_ASSERT_HPP
+#
+# include <boost/preprocessor/config/config.hpp>
+# include <boost/preprocessor/control/expr_iif.hpp>
+# include <boost/preprocessor/control/iif.hpp>
+# include <boost/preprocessor/logical/not.hpp>
+# include <boost/preprocessor/tuple/eat.hpp>
+#
+# /* BOOST_PP_ASSERT */
+#
+# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
+#    define BOOST_PP_ASSERT BOOST_PP_ASSERT_D
+# else
+#    define BOOST_PP_ASSERT(cond) BOOST_PP_ASSERT_D(cond)
+# endif
+#
+# define BOOST_PP_ASSERT_D(cond) BOOST_PP_IIF(BOOST_PP_NOT(cond), BOOST_PP_ASSERT_ERROR, BOOST_PP_TUPLE_EAT_1)(...)
+# define BOOST_PP_ASSERT_ERROR(x, y, z)
+#
+# /* BOOST_PP_ASSERT_MSG */
+#
+# if ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
+#    define BOOST_PP_ASSERT_MSG BOOST_PP_ASSERT_MSG_D
+# else
+#    define BOOST_PP_ASSERT_MSG(cond, msg) BOOST_PP_ASSERT_MSG_D(cond, msg)
+# endif
+#
+# define BOOST_PP_ASSERT_MSG_D(cond, msg) BOOST_PP_EXPR_IIF(BOOST_PP_NOT(cond), msg)
+#
+# endif