Squashed 'third_party/boostorg/range/' content from commit 4cfd4d8

Change-Id: I641c49f21039952b16f888223a952503e43a28a9
git-subtree-dir: third_party/boostorg/range
git-subtree-split: 4cfd4d8287ca949d7f29256adf3e796a0d1775ec
diff --git a/include/boost/range/detail/as_literal.hpp b/include/boost/range/detail/as_literal.hpp
new file mode 100644
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+++ b/include/boost/range/detail/as_literal.hpp
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+// Boost.Range library
+//
+//  Copyright Thorsten Ottosen 2006. 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)
+//
+// For more information, see http://www.boost.org/libs/range/
+//
+
+#ifndef BOOST_RANGE_DETAIL_AS_LITERAL_HPP
+#define BOOST_RANGE_DETAIL_AS_LITERAL_HPP
+
+#if defined(_MSC_VER)
+# pragma once
+#endif
+
+#include <boost/range/detail/detail_str.hpp>
+#include <boost/range/iterator_range.hpp>
+
+namespace boost
+{
+    template< class Range >
+    inline iterator_range<BOOST_DEDUCED_TYPENAME range_iterator<Range>::type> 
+    as_literal( Range& r )
+    {
+        return ::boost::make_iterator_range( ::boost::range_detail::str_begin(r),
+                                             ::boost::range_detail::str_end(r) );
+    }
+
+}
+
+#endif