Merged latest version of the boost 1.63.0 vendor drop

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7593 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

boost/boost/python/detail/map_entry.hpp

@@ -0,0 +1,43 @@
+// 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)
+#ifndef MAP_ENTRY_DWA2002118_HPP
+# define MAP_ENTRY_DWA2002118_HPP
+
+namespace boost { namespace python { namespace detail { 
+
+// A trivial type that works well as the value_type of associative
+// vector maps
+template <class Key, class Value>
+struct map_entry
+{
+    map_entry() {}
+    map_entry(Key k) : key(k), value() {}
+    map_entry(Key k, Value v) : key(k), value(v) {}
+    
+    bool operator<(map_entry const& rhs) const
+    {
+        return this->key < rhs.key;
+    }
+        
+    Key key;
+    Value value;
+};
+
+template <class Key, class Value>
+bool operator<(map_entry<Key,Value> const& e, Key const& k)
+{
+    return e.key < k;
+}
+
+template <class Key, class Value>
+bool operator<(Key const& k, map_entry<Key,Value> const& e)
+{
+    return k < e.key;
+}
+
+
+}}} // namespace boost::python::detail
+
+#endif // MAP_ENTRY_DWA2002118_HPP