Squashed 'third_party/boostorg/concept_check/' content from commit ed0a0eb

Change-Id: Ib7230965334f9501601efc300242efde8352a380
git-subtree-dir: third_party/boostorg/concept_check
git-subtree-split: ed0a0ebd72f778cfa4931e0538ea34c28db3a42b
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+<html>
+<head>
+<meta http-equiv="refresh" content="0; URL=concept_check.htm">
+</head>
+<body>
+Automatic redirection failed, please go to
+<a href="concept_check.htm">concept_check.htm</a>.&nbsp;<hr>
+<p>© Copyright Beman Dawes, 2001</p>
+<p>Distributed under the Boost Software License, Version 1.0. (See accompanying 
+file <a href="../../LICENSE_1_0.txt">LICENSE_1_0.txt</a> or copy 
+at <a href="http://www.boost.org/LICENSE_1_0.txt">www.boost.org/LICENSE_1_0.txt</a>)</p>
+</body>
+</html>
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