tree-wide: parallel: Fully removed all Lrc, replaced with Arc

[safinaskar]

tree-wide: parallel: Fully removed all Lrc, replaced with Arc

This is continuation of #132282 .

I'm pretty sure I did everything right. In particular, I searched all occurrences of Lrc in submodules and made sure that they don't need replacement.

There are other possibilities, through.

We can define enum Lrc<T> { Rc(Rc<T>), Arc(Arc<T>) }. Or we can make Lrc a union and on every clone we can read from special thread-local variable. Or we can add a generic parameter to Lrc and, yes, this parameter will be everywhere across all codebase.

So, if you thing we should take some alternative approach, then don't merge this PR. But if it is decided to stick with Arc, then, please, merge.

cc "Parallel Rustc Front-end" ( #113349 )

r? SparrowLii

@rustbot label WG-compiler-parallel

[rustbot]

The rustc-dev-guide subtree was changed. If this PR only touches the dev guide consider submitting a PR directly to rust-lang/rustc-dev-guide otherwise thank you for updating the dev guide with your changes.

cc @BoxyUwU, @jieyouxu, @Kobzol

Some changes occurred in compiler/rustc_codegen_gcc

cc @antoyo, @GuillaumeGomez

Some changes occurred in src/tools/clippy

cc @rust-lang/clippy

Some changes occurred in src/tools/rustfmt

cc @rust-lang/rustfmt

rustc_error_messages was changed

cc @davidtwco, @compiler-errors, @TaKO8Ki

The Miri subtree was changed

cc @rust-lang/miri

[rustbot]

Some changes occurred in src/tools/rustfmt

cc @rust-lang/rustfmt

The rustc-dev-guide subtree was changed. If this PR only touches the dev guide consider submitting a PR directly to rust-lang/rustc-dev-guide otherwise thank you for updating the dev guide with your changes.

cc @BoxyUwU, @jieyouxu, @Kobzol

The Miri subtree was changed

cc @rust-lang/miri

Some changes occurred in src/tools/clippy

cc @rust-lang/clippy

rustc_error_messages was changed

cc @davidtwco, @compiler-errors, @TaKO8Ki

Some changes occurred in compiler/rustc_codegen_gcc

cc @antoyo, @GuillaumeGomez

[safinaskar]

I rebased