[v3] update C++0x status table

[Magnus Fromreide]

On Thu, 2011-02-10 at 00:54 +0000, Jonathan Wakely wrote:
> 2011-02-10  Jonathan Wakely  <jwakely.gcc@gmail.com>
> 
>         * doc/xml/manual/status_cxx200x.xml: Update.
>         * doc/html/*: Regenerate.
> 
> Updates the table to describe the status of the library for 4.6
> 
> Corrections and further changes welcome!
> 
> Committed to trunk.

Looking at trunk the code for at least duration and time_point (in
<chrono>) lack constexpr for the binary operators (20.11§1 //duration
arithmetic and // time_point arithmetic).

Now, I think the right thing to do is to add the missing declarations
but for now both of them still lack constexprs.

/MF