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diff --git a/src/third_party/boost-1.60.0/boost/intrusive/detail/list_node.hpp b/src/third_party/boost-1.60.0/boost/intrusive/detail/list_node.hpp
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+++ b/src/third_party/boost-1.60.0/boost/intrusive/detail/list_node.hpp
@@ -0,0 +1,71 @@
+/////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Olaf Krzikalla 2004-2006.
+// (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_LIST_NODE_HPP
+#define BOOST_INTRUSIVE_LIST_NODE_HPP
+
+#ifndef BOOST_CONFIG_HPP
+#  include <boost/config.hpp>
+#endif
+
+#if defined(BOOST_HAS_PRAGMA_ONCE)
+#  pragma once
+#endif
+
+#include <boost/intrusive/pointer_rebind.hpp>
+
+namespace boost {
+namespace intrusive {
+
+// list_node_traits can be used with circular_list_algorithms and supplies
+// a list_node holding the pointers needed for a double-linked list
+// it is used by list_derived_node and list_member_node
+
+template<class VoidPointer>
+struct list_node
+{
+   typedef typename pointer_rebind<VoidPointer, list_node>::type  node_ptr;
+   node_ptr next_;
+   node_ptr prev_;
+};
+
+template<class VoidPointer>
+struct list_node_traits
+{
+   typedef list_node<VoidPointer>      node;
+   typedef typename node::node_ptr     node_ptr;
+   typedef typename pointer_rebind<VoidPointer, const node>::type   const_node_ptr;
+
+   static node_ptr get_previous(const const_node_ptr & n)
+   {  return n->prev_;  }
+
+   static node_ptr get_previous(const node_ptr & n)
+   {  return n->prev_;  }
+
+   static void set_previous(const node_ptr & n, const node_ptr & prev)
+   {  n->prev_ = prev;  }
+
+   static node_ptr get_next(const const_node_ptr & n)
+   {  return n->next_;  }
+
+   static node_ptr get_next(const node_ptr & n)
+   {  return n->next_;  }
+
+   static void set_next(const node_ptr & n, const node_ptr & next)
+   {  n->next_ = next;  }
+};
+
+} //namespace intrusive
+} //namespace boost
+
+#endif //BOOST_INTRUSIVE_LIST_NODE_HPP