$NetBSD$

rust-bindgen upstream (#2338 and #2319), Self
Updates the bundled rust-bindgen crate to be compatible
with Clang/LLVM 16.

clang: Detect anonymous items explicitly, rather than relying on empty names.
In Clang 16, anonymous items may return names like `(anonymous union at ...)`
rather than emoty names.
The right way to detect them is using clang_Cursor_isAnonymous.
Fixes https://github.com/rust-lang/rust-bindgen/issues/2312
Closes https://github.com/rust-lang/rust-bindgen/pull/2316

ir: Don't crash with built-in unexposed types from libclang.
This fixes https://github.com/rust-lang/rust-bindgen/issues/2325

The issue is that `__bf16` is not exposed at all by libclang, which
causes us to crash. It's a bit of a shame libclang doesn't expose it but
there's no rust equivalent I think, so this should be ok for now.

Unfortunately no test because the header crashes older clang versions.

--- Cargo.lock.orig	2023-05-13 01:55:05.593291732 +0200
+++ Cargo.lock	2023-05-13 01:55:28.140873785 +0200
@@ -394,8 +394,6 @@
 [[package]]
 name = "bindgen"
 version = "0.56.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2da379dbebc0b76ef63ca68d8fc6e71c0f13e59432e0987e508c1820e6ab5239"
 dependencies = [
  "bitflags",
  "cexpr",