[boost] [ptr_container] Pointer Hash Tables

Hey, I'm not sure if anyone has thought of this, but with the new unordered containers coming up (they've already been introduced in the first visual studio feature pack), it sure would be nice to have some new additions to ptr_container: ptr_unordered_set ptr_unordered_multiset ptr_unordered_map ptr_unordered_multimap They might need better names, but you get the basic idea. Any plans on implementing these?