Imported existing code

libraries/include/boost/python/detail/api_placeholder.hpp

@@ -0,0 +1,15 @@
+// Copyright David Abrahams 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)
+
+// DEPRECATED HEADER (2006 Jan 12)
+// Provided only for backward compatibility.
+// The boost::python::len() function is now defined in object.hpp.
+
+#ifndef BOOST_PYTHON_API_PLACE_HOLDER_HPP
+#define BOOST_PYTHON_API_PLACE_HOLDER_HPP
+
+#include <boost/python/object.hpp>
+
+#endif // BOOST_PYTHON_API_PLACE_HOLDER_HPP