Fix segfaults in release build C-variadic fns

`va_start` and `va_end` must be called to initialize/cleanup the
"spoofed" `VaList` in a Rust defined C-variadic function even  if
the `VaList` is not used.

r? @alexreg
Fixes: #58980

HirIdification: almost there

The next iteration of HirIdification (#57578).

Replaces a bunch of `NodeId` method calls (mostly `as_local_node_id`) with `HirId` ones.

Removes `NodeId` from:
- [x] `PathSegment`
- [x] `PatKind`
- [x] `Destination` (replaces it with `HirId`)

In addition this PR also removes `Visitor::visit_def_mention`, which doesn't seem to be doing anything.

Always emit unclosed delimiter diagnostics

Fix #58886.

Create a derive macro for HashStable and allow proc macros in rustc

A combination of https://github.com/rust-lang/rust/pull/56864 and https://github.com/rust-lang/rust/pull/56795. There were complications with using `serde_derive` as rustc doesn't know which crate to use for the host when there is a serde_derive in the sysroot and cargo passes another on the command line built from crates.io.

r? @EddyB (for proc macro changes) @alexcrichton (for rustbuild changes) @michaelwoerister (for the macro itself)

`va_start` and `va_end` must be called to initialize/cleanup the
"spoofed" `VaList` in a Rust defined C-variadic function even if
the `VaList` is not used.

Fix #58856.

Add const generics to ty (and transitive dependencies)

Split out from #53645. This work is a collaborative effort with @yodaldevoid.

There are a number of stubs. Some I plan to leave for the next PRs (e.g. `infer` and `rustdoc`). Others I can either fix up in this PR, or as follow ups (which would avoid the time-consuming rebasing).

It was a little hard to split this up, as so much depends on ty and friends. Apologies for the large diff.

r? @EddyB

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>

Co-Authored-By: NGabriel Smith <yodaldevoid@users.noreply.github.com>