[v3] std::tr1::array testsuite additions, first attempt

[Benjamin Kosnik]

>Benjamin, is the size comparison pointless here, since both arrays have
>the same _Nm ?

Yes!

>If it is needed, then the call to std::equal will go off the end of two
>if two.size() < one.size() because it's called whether or not the sizes
>are the same. Could use && to short circuit, but I think this is OK:
>
>    return std::equal(__one.begin(), __one.end(), __two.begin());

I'll make this change.

Thanks!

-benjamin