[Bug libstdc++/101485] Calling std::equal with std::byte* does not use memcmp

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101485

--- Comment #14 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Gašper has confirmed that the intention is for it to be SFINAE-friendly, so
declcall would work here (and for [comparisons.general],
[comparisons.three.way], and [range.cmp], although P2434 might make it
unnecessary for those).