Libstdc++ patch ping

[Jakub Jelinek]

Hi!

I'd like to ping the

libstdc++, v3: Implement C++26 P3378R2 - constexpr exception types [PR121114]                                                                                                         
https://gcc.gnu.org/pipermail/gcc-patches/2025-September/694527.html

c++, libstdc++, v4: Implement C++23 P2674R1 - A trait for implicit lifetime types
https://gcc.gnu.org/pipermail/gcc-patches/2025-August/693683.html                                                                                                                     

libstdc++, v2: Implement C++23 P2590R2 - Explicit lifetime management
https://gcc.gnu.org/pipermail/gcc-patches/2025-August/693675.html

patches.
The second has been reviewed by Jason on the C++ FE side already and has
Tomasz's review comments incorporated, the third one has Tomasz's and
Richi's comments incorporated too.

Thanks

	Jakub