[PATCH] libstdc++: add support for constexpr stable_sort (P2562R1)

[Jonathan Wakely]

On Wed, 8 Jan 2025 at 10:49, Giuseppe D'Angelo
<giuseppe.dangelo@kdab.com> wrote:
>
> Hello,
>
> This patch adds constexpr to the stable_sort algorithms, implementing
> P2562R1 for C++26. Tested on x86-64 Linux.

This one looks good too, so I'll also push this. Thanks!