[boost] [1.47] Serialization for std::tr1::unordered

Since we're talking about 1.47, I'd like to draw some attention to TR1 and serialization. I submitted a patch to serialize std::tr1::unordered, the std container not presently covered. <https://svn.boost.org/trac/boost/ticket/5265> Any chance of getting this into 1.47?