[Patch] Initial bits of tr1/type_traits

[chris jefferson]

Paolo Carlini wrote:

> Hi everyone,
>
> finally I can devote some time to this *interesting* project!
>
> The below would be only an initial skeleton, which adds a bit of
> infrastructure and is supposed to get reasonably right only:
>
>    is_void
>    is_integral
>    is_floating_point
>    is_array
>
> and the composite type traits as per 4.5.2.
>
> I'd like to check it in and continue from here, if nobody spots
> something obviously wrong, of course...


I'd just like to say that I find this the most exciting thing in the 
library extension, both for programming externally and also for 
improving libstdc++. Glad to see it's starting in good hands.

PS. You learn something new every day. I'd never imagined there would be 
a "const void" and a "volatile void" type ::)

Chris