Merge branch 'ps/clang-w-glibc-2.43-and-_Generic' into maint-2.54

Headers from glibc 2.43 when used with clang does not allow
disabling C11 language features, causing build failures..

* ps/clang-w-glibc-2.43-and-_Generic:
  build: tolerate use of _Generic from glibc 2.43 with Clang

diff --cc config.mak.dev
Simple merge

diff --cc meson.build
Simple merge