Added boost header

test/external/boost/serialization/tracking_enum.hpp

@@ -0,0 +1,41 @@
+#ifndef BOOST_SERIALIZATION_TRACKING_ENUM_HPP
+#define BOOST_SERIALIZATION_TRACKING_ENUM_HPP
+
+// MS compatible compilers support #pragma once
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// tracking_enum.hpp:
+
+// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
+// Use, modification and distribution is subject to 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 for updates, documentation, and revision history.
+
+namespace boost {
+namespace serialization {
+
+// addresses of serialized objects may be tracked to avoid saving/loading
+// redundant copies.  This header defines a class trait that can be used
+// to specify when objects should be tracked
+
+// names for each tracking level
+enum tracking_type
+{
+    // never track this type
+    track_never = 0,
+    // track objects of this type if the object is serialized through a 
+    // pointer.
+    track_selectively = 1,
+    // always track this type
+    track_always = 2
+};
+
+} // namespace serialization
+} // namespace boost
+
+#endif // BOOST_SERIALIZATION_TRACKING_ENUM_HPP