* Remove A: Clone bound from Rc::assume_init, Rc::downcast, and Rc::downcast_unchecked.
* Make From<Rc<[T; N]>> for Rc<[T]> allocator-aware.

Internal changes:

* Made Arc::internal_into_inner_with_allocator method into Arc::into_inner_with_allocator associated fn.
* Add private Rc::into_inner_with_allocator (to match Arc), so other fns don't have to juggle ManuallyDrop.

…k-Simulacrum

Enable profiler for armv7-unknown-linux-gnueabihf.

Allow code coverage measurement for armv7-unknown-linux-gnueabihf targets. Fixes rust-lang#79640.

…type, r=GuillaumeGomez

Always hide private fields in aliased type

This PR adds a new rustdoc pass that unconditionally always strips all private fields in aliased type, since showing them, even with `--document-private-items`, is confusing, unhelpful, and run backwards to the "Aliased type" feature, which is to show the type as it would be seen by the user.

r? `@GuillaumeGomez`
Fixes rust-lang#124938
Fixes rust-lang#123860

…red-flags, r=jieyouxu

Migrate `run-make/rustdoc-shared-flags` to rmake

Part of rust-lang#121876.

r? `@jieyouxu`

… r=Mark-Simulacrum

Relax allocator requirements on some Rc/Arc APIs.

Split out from rust-lang#119761

* Remove `A: Clone` bound from `Rc::assume_init`(s), `Rc::downcast`, and `Rc::downcast_unchecked` (`Arc` methods were already relaxed by rust-lang#120445)
* Make `From<Rc<[T; N]>> for Rc<[T]>` allocator-aware (`Arc`'s already is).
* Remove `A: Clone` from `Rc/Arc::unwrap_or_clone`

Internal changes:

* Made `Arc::internal_into_inner_with_allocator` method into `Arc::into_inner_with_allocator` associated fn.
* Add private `Rc::into_inner_with_allocator` (to match Arc), so other fns don't have to juggle `ManuallyDrop`.

…ler-errors

Add test for rust-lang#122775

Closes rust-lang#122775