Rollup of 11 pull requests

[Dylan-DPC-zz]

Successful merges:

• Clarify availability of atomic operations #79119 (Clarify availability of atomic operations)
• Add u128 and i128 integer tests #79123 (Add u128 and i128 integer tests)
• Test drop order for (destructuring) assignments #79177 (Test drop order for (destructuring) assignments)
• rustdoc: add [src] links to methods on a trait's page #79181 (rustdoc: add [src] links to methods on a trait's page)
• Make compiletest testing use the local sysroot #79183 (Make compiletest testing use the local sysroot)
• expand/resolve: Pre-requisites to "Turn #[derive] into a regular macro attribute" #79185 (expand/resolve: Pre-requisites to "Turn #[derive] into a regular macro attribute")
• Revert #78969 "Normalize function type during validation" #79193 (Revert Normalize function type during validation #78969 "Normalize function type during validation")
• Make as{_mut,}_slice on array::IntoIter public #79194 (Make as{_mut,}_slice on array::IntoIter public)
• Add jyn514 email alias to mailmap #79204 (Add jyn514 email alias to mailmap)
• Move rustc_ty -> rustc_ty_utils #79212 (Move rustc_ty -> rustc_ty_utils)
• Add the "memcpy" doc alias to slice::copy_from_slice #79217 (Add the "memcpy" doc alias to slice::copy_from_slice)

Failed merges:

r? @ghost
@rustbot modify labels: rollup

Create a similar rollup