add support for targeting glibc 2.37

[nektro]

Previous release issue: #12809

glibc 2.37 was released. Time to follow the update procedure.

Major new features that may be relevant:

Deprecated and removed features, and other changes affecting compatibility:

* The dynamic linker no longer loads shared objects from the "tls"
  subdirectories on the library search path or the subdirectory that
  corresponds to the AT_PLATFORM system name, or employs the legacy AT_HWCAP
  search mechanism, which was deprecated in version 2.33.

[The-King-of-Toasters]

I can do this. Is it ok to skip directly to 2.37 or should I go through the process for 2.35..2.37?

See also ziglang/glibc-abi-tool#4.

[nektro]

the tool is a related thing but not the whole story, https://github.com/ziglang/zig/wiki/Updating-libc#glibc is what's required and usually done by one of the core maintainers since it touches so many files and is a sensitive part of the compilation story of zig

[The-King-of-Toasters]

I've done all the steps in the wiki for 2.35 short of cherry-picking our patches, but since I'll be changing the headers directory each time I thought it would be better to skip straight to 2.37.