Fix panic in subslice patterns of arrays (fixes rust-lang#276)

Add missing constants for wait family

Fixes rust-lang#315

Fix grammar for orphan check

Re-write shadow lints

changelog: Move shadow_unrelated to restriction
changelog: The shadow lints find a lot more shadows and are not limited to certain patterns

Drastically simplifies the implementation. Catches a lot more cases.

I removed the "initialization happens here" note. It is not helpful IMO.

Closes rust-lang#318
Fixes rust-lang#2890
Fixes rust-lang#6563
Fixes rust-lang#7588
Fixes rust-lang#7620

Avoid a scalar loop in `Simd::from_slice`

Add doc for sending patches to GCC

For branch `main-153-2021-07-09`

This is an automated PR to merge library subtree updates from 2025-04-01
(rust-lang/rust@0b45675) to 2025-04-04
(rust-lang/rust@00095b3), inclusive.
This is a clean merge, no conflicts were detected. **Do not remove or
edit the following annotations:**
git-subtree-dir: library
git-subtree-split: 0cce469

---------

Signed-off-by: Sean Cross <[email protected]>
Signed-off-by: Jiahao XU <[email protected]>
Signed-off-by: Ayush Singh <[email protected]>
Signed-off-by: xizheyin <[email protected]>
Co-authored-by: Oli Scherer <[email protected]>
Co-authored-by: Trevor Gross <[email protected]>
Co-authored-by: Jakub Beránek <[email protected]>
Co-authored-by: Ralf Jung <[email protected]>
Co-authored-by: Sean Cross <[email protected]>
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Co-authored-by: bors <[email protected]>
Co-authored-by: Nicole L <[email protected]>
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Co-authored-by: Matthias Krüger <[email protected]>
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Co-authored-by: Jacob Pratt <[email protected]>
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Co-authored-by: Yotam Ofek <[email protected]>
Co-authored-by: okaneco <[email protected]>
Co-authored-by: 许杰友 Jieyou Xu (Joe) <[email protected]>
Co-authored-by: Guillaume Gomez <[email protected]>
Co-authored-by: Ayush Singh <[email protected]>
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Co-authored-by: Takayuki Maeda <[email protected]>
Co-authored-by: DaniPopes <[email protected]>
Co-authored-by: Mads Marquart <[email protected]>
Co-authored-by: Christopher Durham <[email protected]>
Co-authored-by: Rafael Bachmann <[email protected]>
Co-authored-by: xizheyin <[email protected]>
Co-authored-by: Benoît du Garreau <[email protected]>
Co-authored-by: Daniel Henry-Mantilla <[email protected]>
Co-authored-by: mejrs <[email protected]>
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Co-authored-by: Daniel Bloom <[email protected]>
Co-authored-by: gitbot <git@bot>
Co-authored-by: Michael Tautschnig <[email protected]>