the `tail-expr-lock-poisoning` UI test uses the `panic::catch_unwind`
API so it relies on unwinding being implemented. this test ought not to
run on targets that do not support unwinding. add the `needs-unwind`
attribute to signal this

…youxu

Migrate `link-args-order`, `ls-metadata` and `lto-readonly-lib` `run-make` tests to `rmake`

Part of rust-lang#121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).

Guaranteed to fail CI until rust-lang#125736 gets merged. Will require addition of `fs_wrapper::set_permissions` in the associated module.

try-job: x86_64-msvc

…mpressed-debuginfo, r=jieyouxu

Migrate `run-make/compressed-debuginfo` to `rmake.rs`

Part of rust-lang#121876.

r? ````@jieyouxu````

Rewrite `extern-flag-rename-transitive`. `debugger-visualizer-dep-info`, `metadata-flag-frobs-symbols`, `extern-overrides-distribution` and `forced-unwind-terminate-pof` `run-make` tests to rmake

Part of rust-lang#121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).

try-job: dist-x86_64-apple

collect attrs in const block expr

Fixes rust-lang#126516
Fixes rust-lang#126647

It was forgotten to collect these attributes in the const block expression.

r? `@petrochenkov`

…s, r=compiler-errors

Remove `feature(const_closures)` from libcore

This is an incomplete feature and apparently it has no uses in `core`. Incomplete features should generally not be used in our standard library.

… r=lcnr

add `needs-unwind` to UI test

the `tail-expr-lock-poisoning` UI test uses the `panic::catch_unwind` API so it relies on unwinding being implemented. this test ought not to run on targets that do not support unwinding. add the `needs-unwind` attribute to signal this