bindgen 0.72 and clang 22

[Fabio Valentini]

Hi all,

It appears that clang will change how it represents some data
structures in clang 22, breaking bindgen < 0.72. See the discussion in
this PR:
https://src.fedoraproject.org/rpms/rust-bindgen/pull-request/4

I'm building bindgen 0.72 and a compat package for 0.71 now, and have
started patching packages that currently depend on bindgen < 0.72 to
build with >=0.71,<0.73 - and upstreaming those patches. Hopefully
over the next few months, we'll be able to patch everything to use
bindgen >= 0.72 in time for clang 22 landing in ~half a year.

Fabio