library/backtrace also declares a feature called `gimli-symbolize` which
appear used, but the feature in std with the same name is unused, so
remove it.

this directive prevents compiletest from adding any implicit and
automatic --check-cfg arguments

…rt;`

…-tests, r=davidtwco

Ignore LLVM ABI in dlltool tests since those targets don't use dlltool

Otherwise those two tests fail when running `./x.py test` with this target.

…youxu

Enable `--check-cfg` by default in UI tests

This PR enables-by-default `--check-cfg` in UI tests, now that it has become stable.

To do so this PR does 2 main things:
 - it introduce the `no-auto-check-cfg` directive to `compiletest`, to prevent any `--check-cfg` args (only to be used for `--check-cfg` tests)
 - it updates the _remaining_[^1] UI tests by either:
     - allowing the lint when neither expecting the lint nor giving the check-cfg args make sense
     - give the appropriate check-cfg args
     - or expect the lint, when it useful

[^1]: some preparation work was done in rust-lang#123577 rust-lang#123702

I highly recommend reviewing this PR commit-by-commit.

r? `@jieyouxu`

remove extraneous note on `UnableToRunDsymutil` diagnostic

If I understand [this FIXME](https://github.com/rust-lang/rust/blob/1367827eac3d813a261a4c444037af9736996daa/compiler/rustc_macros/src/diagnostics/diagnostic.rs#L205) correctly, it seems we don't yet validate subdiagnostics, so `#[note]` and co in the `#[derive(Diagnostic]` item could be out-of-sync with the fluent message, without causing compile errors.

It was the case for `rustc_codegen_ssa::errors::UnableToRunDsymutil`, causing the ICE in rust-lang#124392.

I've grepped and scripted my way through most of our diagnostics structs and fluent bundles and the above was the only such extraneous `#[note]`/`#[note(name)]`/`#[help]`/`#[warning]` I could find, so hopefully there aren't many others like it.

I haven't checked if the opposite can happen, a `.note = ` in a fluent message that is lacking a corresponding `#[note]` on the struct and not causing an error, but maybe it's possible?

r? `@davidtwco`
fixes rust-lang#124392

Align: add bytes_usize and bits_usize

This matches `Size::bytes/bits_usize`. I recently wanted this in Miri as well.

…kingjubilee

library/std: Remove unused `gimli-symbolize` feature

library/backtrace also declares a feature called `gimli-symbolize` which appear used, but the feature in std with the same name is unused, so remove it.

…support, r=jieyouxu

Cleanup: Rid the `rmake` test runners of `extern crate run_make_support;`

`run_make_support` is part of the *extern prelude* of `rmake` test runners rendering `extern crate run_make_support` redundant:

https://github.com/rust-lang/rust/blob/80451a485b006bd32732c003a54ee7de457d8266/src/tools/compiletest/src/runtest.rs#L3826-L3827

~~Contains some fmt'ing changes because I've enabled format-on-save in my editor and because we don't run `x fmt` for `rmake` test runners yet (this gets addressed by rust-lang#124613). I can revert those if you'd like me to.~~ (reverted)

r? jieyouxu or testing-devex(?) or boostrap(?)

shallow resolve in orphan check

r? `@compiler-errors` cc rust-lang#124588 (review)

…r=fmease

interpret: hide some reexports in rustdoc

Cc rust-lang#124608