RFA (libstdc++): C++/v3 PATCH for c++/24163 (lookup in dependent bases) and c++/29131

[Paolo Carlini]

Hi,
> That only shows up if you configure with --enable-libstcxx-time
>
> I'll finish reg-testing it and submit it when I get home this evening.
thanks Jon. Looks like we have also to fix parallel-mode (49187), I hope 
there isn't too much to reshuffle, if you spot something...

Thanks again,
Paolo.