And also add backticks around `MaybeUninit`.

That PR caused multiple test failures when Rust's channel is changed
from nightly to anything else. The commit will have to be landed again
after the test suite is fixed.

This commit implements both the native linking modifiers infrastructure
as well as an initial attempt at the individual modifiers from the RFC.
It also introduces a feature flag for the general syntax along with
individual feature flags for each modifier.

…trochenkov

Implement RFC 2951: Native link modifiers

A first attempt at implementing rust-lang/rfcs#2951 / rust-lang/compiler-team#356.

Tracking Issue: rust-lang#81490

Introduces feature flags for the general syntax (`native_link_modifiers`) and each modifier (`native_link_modifiers_{as_needed,bundle,verbatim,whole_archive}`).

r? `@petrochenkov`

…, r=m-ou-se

Stablize {HashMap,BTreeMap}::into_{keys,values}

I would propose to stabilize `{HashMap,BTreeMap}::into_{keys,values}`( aka. `map_into_keys_values`).

Closes rust-lang#75294.

Simplify chdir implementation and minimize unsafe block

…=jonas-schievink

⬆️ rust-analyzer

…chenkov

Only compute Obligation `cache_key` once  in `register_obligation_at`

…etrochenkov

E0583: Include secondary path in error message

Fixes rust-lang#84819.

Fix typo in `MaybeUninit::array_assume_init` safety comment

And also add backticks around `MaybeUninit`.

…rk-Simulacrum

Revert PR 83866

rust-lang#83866 caused multiple test failures when Rust's channel is changed from nightly to anything else. The PR will have to be landed again after the test suite is fixed.

The two kinds of test failures were:

* Rustdoc tests failed because the links in the generated HTML didn't point at nightly anymore, see rust-lang#84909 (comment)
* Rustdoc UI tests failed because the links included in error messages didn't point at nightly anymore, see rust-lang#84909 (comment)

r? ``@Mark-Simulacrum``
cc ``@jyn514``