c++0x tests fixes

[Paolo Carlini]

On 11/30/2010 12:32 AM, Jonathan Wakely wrote:
> Whether it's overkill or not, I don't like the name - it's a feature
> of C++0x, not the fact the implementation is experimental.
>   
I agree, first blush I also didn't like the name. As I tried to say
already, I'm also a bit concerned that we may end up multiplying the
number of gates beyond control, but I don't have a very strong opinion.

Paolo.