Squashed 'third_party/boostorg/optional/' content from commit 155ad59

Change-Id: I4ad7a1e7b295a6136c5a0d7b6c11700e76b939b5
git-subtree-dir: third_party/boostorg/optional
git-subtree-split: 155ad5911e5683cc87d34363f8304b60a30a8345
diff --git a/include/boost/optional.hpp b/include/boost/optional.hpp
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+// Copyright (C) 2003, Fernando Luis Cacciola Carballal.
+//
+// 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)
+//
+// See http://www.boost.org/libs/optional for documentation.
+//
+// You are welcome to contact the author at:
+//  fernando_cacciola@hotmail.com
+//
+#ifndef BOOST_OPTIONAL_FLC_19NOV2002_HPP
+#define BOOST_OPTIONAL_FLC_19NOV2002_HPP
+
+#include "boost/optional/optional.hpp"
+
+#endif
+