Rollup of 8 pull requests

[Centril]

Successful merges:

• Limit dylib symbols #59752 (Limit dylib symbols)
• Update new_debug_unreachable #61767 (Updates smallvec and new_debug_unreachable)
• note some safety concerns of raw-ptr-to-ref casts #61785 (note some safety concerns of raw-ptr-to-ref casts)
• typeck: Fix ICE for blocks in repeat expr count. #61805 (typeck: Fix ICE for blocks in repeat expr count.)
• in which we decline to lint single-use lifetimes in derived impls #61824 (in which we decline to lint single-use lifetimes in derived impls)
• type_alias_enum_variants: fix #61801; allow a path pattern to infer #61825 (type_alias_enum_variants: fix #![feature(type_alias_enum_variants)]: Unit variant pattern through a type alias to generic enum requires type annotations #61801; allow a path pattern to infer)
• Fix rust-lldb wrapper scripts. #61827 (Fix rust-lldb wrapper scripts.)
• rustbuild: include llvm-libunwind in dist tarball #61829 (rustbuild: include llvm-libunwind in dist tarball)

Failed merges:

r? @ghost