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diff --git a/src/third_party/boost-1.60.0/boost/intrusive/derivation_value_traits.hpp b/src/third_party/boost-1.60.0/boost/intrusive/derivation_value_traits.hpp
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+++ b/src/third_party/boost-1.60.0/boost/intrusive/derivation_value_traits.hpp
@@ -0,0 +1,77 @@
+/////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga  2006-2013
+//
+// 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)
+//
+// See http://www.boost.org/libs/intrusive for documentation.
+//
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_INTRUSIVE_DERIVATION_VALUE_TRAITS_HPP
+#define BOOST_INTRUSIVE_DERIVATION_VALUE_TRAITS_HPP
+
+#include <boost/intrusive/detail/config_begin.hpp>
+#include <boost/intrusive/intrusive_fwd.hpp>
+#include <boost/intrusive/link_mode.hpp>
+#include <boost/intrusive/pointer_traits.hpp>
+
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#  pragma once
+#endif
+
+namespace boost {
+namespace intrusive {
+
+//!This value traits template is used to create value traits
+//!from user defined node traits where value_traits::value_type will
+//!derive from node_traits::node
+
+template<class T, class NodeTraits, link_mode_type LinkMode
+   #ifdef BOOST_INTRUSIVE_DOXYGEN_INVOKED
+   = safe_link
+   #endif
+>
+struct derivation_value_traits
+{
+   public:
+   typedef NodeTraits                                                node_traits;
+   typedef T                                                         value_type;
+   typedef typename node_traits::node                                node;
+   typedef typename node_traits::node_ptr                            node_ptr;
+   typedef typename node_traits::const_node_ptr                      const_node_ptr;
+   typedef typename pointer_traits<node_ptr>::
+      template rebind_pointer<value_type>::type                      pointer;
+   typedef typename pointer_traits<node_ptr>::
+      template rebind_pointer<const value_type>::type                const_pointer;
+   typedef typename boost::intrusive::
+      pointer_traits<pointer>::reference                             reference;
+   typedef typename boost::intrusive::
+      pointer_traits<const_pointer>::reference                       const_reference;
+   static const link_mode_type link_mode = LinkMode;
+
+   static node_ptr to_node_ptr(reference value)
+   { return node_ptr(&value); }
+
+   static const_node_ptr to_node_ptr(const_reference value)
+   { return node_ptr(&value); }
+
+   static pointer to_value_ptr(const node_ptr &n)
+   {
+      return pointer_traits<pointer>::pointer_to(static_cast<reference>(*n));
+   }
+
+   static const_pointer to_value_ptr(const const_node_ptr &n)
+   {
+      return pointer_traits<pointer>::pointer_to(static_cast<const_reference>(*n));
+   }
+};
+
+} //namespace intrusive
+} //namespace boost
+
+#include <boost/intrusive/detail/config_end.hpp>
+
+#endif //BOOST_INTRUSIVE_DERIVATION_VALUE_TRAITS_HPP