Rollup of 7 pull requests
Successful merges:
- #123294 (Require LLVM_CONFIG to be set in rustc_llvm/build.rs)
- #123467 (MSVC targets should use COFF as their archive format)
- #123498 (explaining `DefKind::Field`)
- #123519 (Improve cfg and check-cfg configuration)
- #123525 (CFI: Don't rewrite ty::Dynamic directly)
- #123526 (Do not ICE when calling incorrectly defined `transmute` intrinsic)
- #123528 (Hide async_gen_internals from standard library documentation)
r? `@ghost`
`@rustbot` modify labels: rollup
3f10032eb0