Specializations of std::char_traits

[Benjamin Kosnik]

>We may use a suggestion made on the the LWG reflector:  define
>char_traits as
>
>   template<typename charT>
>      struct char_traits : __gnu_cxx::char_traits<charT> { };
>
>Users can specialize __gnu_cxx::char_traits<> at will on fundamental
>types.  We may provide a definition for the primary template
>__gnu_cxx::char_traits<>.  This we don't create the confusion that
>users can specialize std::templates on fundamental types.
>Comments?

I like this approach too.

It's better than link-only definitions, which are kind of obscure and
wouldn't be inlined. It also keeps control in the hands of the user.

Perhaps this is the time for some code...

-benjamin