support for new character types

[Benjamin Kosnik]

Hey dudes. As I look through the 4.3.0 release notes, I'm pleased about
the C++0x support that's going in. A lot of ground has been covered!

There's one thing major that is missing at this stage of the game IMHO,
and that is support for the new builtin character types that went in
at Oxford in April. Not necessarily the library bits (ie, char_traits
and string specializations), but the compiler side. 

I know that Paolo had given a bit of thought to this. Any update? 

Just curious,
benjamin