C++-0x status docs.

[Benjamin Kosnik]

> > I was thinking about removing concepts from the status pages.  (It
> > makes us look better ;-))
> For sure anything having to do with Concepts should be removed from
> the docs.

Yep. Please update this. 

> > It seems like for gcc-4.5 we are using n3000 as the baseline.  Is
> > this true or are we holding out for the next mailing (any day
> > now...)? This may not be that big of a deal if the sections don't
> > change much from n3000 on.
> I think n3000 is the baseline, with many DRs on top, of course, and
> many changes in 26.5, for example.

Agreed. We usually just state latest draft. Hopefully at some point
that will reflect what is going on in random...

-benjamin