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diff --git a/3rdParty/Boost/src/boost/variant/recursive_variant.hpp b/3rdParty/Boost/src/boost/variant/recursive_variant.hpp
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+++ b/3rdParty/Boost/src/boost/variant/recursive_variant.hpp
@@ -0,0 +1,182 @@
+//-----------------------------------------------------------------------------
+// boost variant/recursive_variant.hpp header file
+// See http://www.boost.org for updates, documentation, and revision history.
+//-----------------------------------------------------------------------------
+//
+// Copyright (c) 2003
+// Eric Friedman
+//
+// 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)
+
+#ifndef BOOST_VARIANT_RECURSIVE_VARIANT_HPP
+#define BOOST_VARIANT_RECURSIVE_VARIANT_HPP
+
+#include "boost/variant/variant_fwd.hpp"
+#include "boost/variant/detail/enable_recursive.hpp"
+#include "boost/variant/detail/substitute_fwd.hpp"
+#include "boost/variant/detail/make_variant_list.hpp"
+#include "boost/variant/detail/over_sequence.hpp"
+
+#include "boost/mpl/aux_/lambda_arity_param.hpp"
+
+#if !defined(BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT)
+#   include "boost/mpl/eval_if.hpp"
+#   include "boost/mpl/identity.hpp"
+#   include "boost/mpl/protect.hpp"
+#   include "boost/mpl/transform.hpp"
+#else
+#   include "boost/preprocessor/cat.hpp"
+#   include "boost/preprocessor/repeat.hpp"
+#endif
+
+#include "boost/mpl/bool.hpp"
+#include "boost/mpl/is_sequence.hpp"
+#include "boost/variant/variant.hpp"
+
+namespace boost {
+
+namespace detail { namespace variant {
+
+///////////////////////////////////////////////////////////////////////////////
+// (detail) metafunction specialization substitute
+//
+// Handles embedded variant types when substituting for recursive_variant_.
+//
+
+#if !defined(BOOST_VARIANT_DETAIL_NO_SUBSTITUTE)
+
+template <
+      BOOST_VARIANT_ENUM_PARAMS(typename T)
+    , typename RecursiveVariant
+      BOOST_MPL_AUX_LAMBDA_ARITY_PARAM(typename Arity)
+    >
+struct substitute<
+      ::boost::variant<
+          recursive_flag< T0 >
+        , BOOST_VARIANT_ENUM_SHIFTED_PARAMS(T)
+        >
+    , RecursiveVariant
+    , ::boost::recursive_variant_
+      BOOST_MPL_AUX_LAMBDA_ARITY_PARAM(Arity)
+    >
+{
+    typedef ::boost::variant<
+          recursive_flag< T0 >
+        , BOOST_VARIANT_ENUM_SHIFTED_PARAMS(T)
+        > type;
+};
+
+template <
+      BOOST_VARIANT_ENUM_PARAMS(typename T)
+    , typename RecursiveVariant
+      BOOST_MPL_AUX_LAMBDA_ARITY_PARAM(typename Arity)
+    >
+struct substitute<
+      ::boost::variant< BOOST_VARIANT_ENUM_PARAMS(T) >
+    , RecursiveVariant
+    , ::boost::recursive_variant_
+      BOOST_MPL_AUX_LAMBDA_ARITY_PARAM(Arity)
+    >
+{
+
+#if !defined(BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT)
+
+private: // helpers, for metafunction result (below)
+
+    typedef typename mpl::eval_if<
+          ::boost::detail::variant::is_over_sequence<T0>
+        , mpl::identity< T0 >
+        , make_variant_list< BOOST_VARIANT_ENUM_PARAMS(T) >
+        >::type initial_types;
+
+    typedef typename mpl::transform<
+          initial_types
+        , mpl::protect< quoted_enable_recursive<RecursiveVariant,mpl::true_> >
+        >::type types;
+
+public: // metafunction result
+
+    typedef ::boost::variant< types > type;
+
+#else // defined(BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT)
+
+private: // helpers, for metafunction result (below)
+
+    #define BOOST_VARIANT_AUX_ENABLE_RECURSIVE_TYPEDEFS(z,N,_)  \
+        typedef typename enable_recursive<   \
+              BOOST_PP_CAT(T,N)              \
+            , RecursiveVariant               \
+            , mpl::true_                     \
+            >::type BOOST_PP_CAT(wknd_T,N);  \
+        /**/
+
+    BOOST_PP_REPEAT(
+          BOOST_VARIANT_LIMIT_TYPES
+        , BOOST_VARIANT_AUX_ENABLE_RECURSIVE_TYPEDEFS
+        , _
+        )
+
+    #undef BOOST_VARIANT_AUX_ENABLE_RECURSIVE_TYPEDEFS
+
+public: // metafunction result
+
+    typedef ::boost::variant< BOOST_VARIANT_ENUM_PARAMS(wknd_T) > type;
+
+#endif // BOOST_VARIANT_NO_TYPE_SEQUENCE_SUPPORT workaround
+
+};
+
+#else // defined(BOOST_VARIANT_DETAIL_NO_SUBSTITUTE)
+
+//
+// no specializations: embedded variants unsupported on these compilers!
+//
+
+#endif // !defined(BOOST_VARIANT_DETAIL_NO_SUBSTITUTE)
+
+}} // namespace detail::variant
+
+///////////////////////////////////////////////////////////////////////////////
+// metafunction make_recursive_variant
+//
+// See docs and boost/variant/variant_fwd.hpp for more information.
+//
+template < BOOST_VARIANT_ENUM_PARAMS(typename T) >
+struct make_recursive_variant
+{
+public: // metafunction result
+
+    typedef boost::variant<
+          detail::variant::recursive_flag< T0 >
+        , BOOST_VARIANT_ENUM_SHIFTED_PARAMS(T)
+        > type;
+
+};
+
+///////////////////////////////////////////////////////////////////////////////
+// metafunction make_recursive_variant_over
+//
+// See docs and boost/variant/variant_fwd.hpp for more information.
+//
+template <typename Types>
+struct make_recursive_variant_over
+{
+private: // precondition assertions
+
+#if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
+    BOOST_STATIC_ASSERT(( ::boost::mpl::is_sequence<Types>::value ));
+#endif
+
+public: // metafunction result
+
+    typedef typename make_recursive_variant<
+          detail::variant::over_sequence< Types >
+        >::type type;
+
+};
+
+} // namespace boost
+
+#endif // BOOST_VARIANT_RECURSIVE_VARIANT_HPP