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diff --git a/3rdParty/Boost/src/boost/date_time/gregorian/greg_duration.hpp b/3rdParty/Boost/src/boost/date_time/gregorian/greg_duration.hpp
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+++ b/3rdParty/Boost/src/boost/date_time/gregorian/greg_duration.hpp
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+#ifndef GREG_DURATION_HPP___
+#define GREG_DURATION_HPP___
+
+/* Copyright (c) 2002,2003 CrystalClear Software, Inc.
+ * Use, modification and distribution is subject to the 
+ * Boost Software License, Version 1.0. (See accompanying
+ * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
+ * Author: Jeff Garland, Bart Garst 
+ * $Date: 2008-11-12 14:37:53 -0500 (Wed, 12 Nov 2008) $
+ */
+
+#include <boost/date_time/date_duration.hpp>
+#include <boost/date_time/int_adapter.hpp>
+#include <boost/date_time/special_defs.hpp>
+
+namespace boost {
+namespace gregorian {
+
+  //!An internal date representation that includes infinities, not a date
+  typedef boost::date_time::duration_traits_adapted date_duration_rep;
+
+  //! Durations in days for gregorian system
+  /*! \ingroup date_basics
+   */
+  class date_duration :
+    public boost::date_time::date_duration< date_duration_rep >
+  {
+    typedef boost::date_time::date_duration< date_duration_rep > base_type;
+
+  public:
+    typedef base_type::duration_rep duration_rep;
+
+    //! Construct from a day count
+    explicit date_duration(duration_rep day_count = 0) : base_type(day_count) {}
+
+    //! construct from special_values
+    date_duration(date_time::special_values sv) : base_type(sv) {}
+
+    //! Copy constructor
+    date_duration(const date_duration& other) : base_type(static_cast< base_type const& >(other))
+    {}
+
+    //! Construct from another date_duration
+    date_duration(const base_type& other) : base_type(other)
+    {}
+
+    //  Relational operators
+    //  NOTE: Because of date_time::date_duration< T > design choice we don't use Boost.Operators here,
+    //  because we need the class to be a direct base. Either lose EBO, or define operators by hand.
+    //  The latter is more effecient.
+    bool operator== (const date_duration& rhs) const
+    {
+      return base_type::operator== (rhs);
+    }
+    bool operator!= (const date_duration& rhs) const
+    {
+      return !operator== (rhs);
+    }
+    bool operator< (const date_duration& rhs) const
+    {
+      return base_type::operator< (rhs);
+    }
+    bool operator> (const date_duration& rhs) const
+    {
+      return !(base_type::operator< (rhs) || base_type::operator== (rhs));
+    }
+    bool operator<= (const date_duration& rhs) const
+    {
+      return (base_type::operator< (rhs) || base_type::operator== (rhs));
+    }
+    bool operator>= (const date_duration& rhs) const
+    {
+      return !base_type::operator< (rhs);
+    }
+
+    //! Subtract another duration -- result is signed
+    date_duration& operator-= (const date_duration& rhs)
+    {
+      base_type::operator-= (rhs);
+      return *this;
+    }
+    friend date_duration operator- (date_duration rhs, date_duration const& lhs)
+    {
+      rhs -= lhs;
+      return rhs;
+    }
+
+    //! Add a duration -- result is signed
+    date_duration& operator+= (const date_duration& rhs)
+    {
+      base_type::operator+= (rhs);
+      return *this;
+    }
+    friend date_duration operator+ (date_duration rhs, date_duration const& lhs)
+    {
+      rhs += lhs;
+      return rhs;
+    }
+
+    //! unary- Allows for dd = -date_duration(2); -> dd == -2
+    date_duration operator- ()const
+    {
+      return date_duration(get_rep() * (-1));
+    }
+
+    //! Division operations on a duration with an integer.
+    date_duration& operator/= (int divisor)
+    {
+      base_type::operator/= (divisor);
+      return *this;
+    }
+    friend date_duration operator/ (date_duration rhs, int lhs)
+    {
+      rhs /= lhs;
+      return rhs;
+    }
+
+    //! Returns the smallest duration -- used by to calculate 'end'
+    static date_duration unit()
+    {
+      return date_duration(base_type::unit().get_rep());
+    }
+  };      
+
+  //! Shorthand for date_duration
+  typedef date_duration days;
+
+} } //namespace gregorian
+
+#if defined(BOOST_DATE_TIME_OPTIONAL_GREGORIAN_TYPES)
+#include <boost/date_time/date_duration_types.hpp>
+#endif
+
+#endif