…idtwco

unix_sigpipe: Replace `inherit` with `sig_dfl` in syntax tests

The `sig_dfl` variant of the attribute is the most likely variant to be stabilized first, and thus to become the "most allowed" variant of the attribute. Because of this, it is the most appropriate variant to use in syntax tests, because even if the most allowed variant is used, the compiler shall still emit errors if it e.g. is used in the wrong places.

r? `@davidtwco` who already [approved ](rust-lang#120832 (review)) this commit in rust-lang#120832.

It would be nice to land the last preparatory commit of that PR before we begin to [rename ](rust-lang#120832 (comment)) things which will of course create a lot of code conflicts.

…kingjubilee

Rollup of 15 pull requests

Successful merges:

 - rust-lang#116791 (Allow codegen backends to opt-out of parallel codegen)
 - rust-lang#116793 (Allow targets to override default codegen backend)
 - rust-lang#117458 (LLVM Bitcode Linker: A self contained linker for nvptx and other targets)
 - rust-lang#119385 (Fix type resolution of associated const equality bounds (take 2))
 - rust-lang#121438 (std support for wasm32 panic=unwind)
 - rust-lang#121893 (Add tests (and a bit of cleanup) for interior mut handling in promotion and const-checking)
 - rust-lang#122080 (Clarity improvements to `DropTree`)
 - rust-lang#122152 (Improve diagnostics for parenthesized type arguments)
 - rust-lang#122166 (Remove the unused `field_remapping` field from `TypeLowering`)
 - rust-lang#122249 (interpret: do not call machine read hooks during validation)
 - rust-lang#122299 (Store backtrace for `must_produce_diag`)
 - rust-lang#122318 (Revision-related tweaks for next-solver tests)
 - rust-lang#122320 (Use ptradd for vtable indexing)
 - rust-lang#122328 (unix_sigpipe: Replace `inherit` with `sig_dfl` in syntax tests)
 - rust-lang#122330 (bootstrap readme: fix, improve, update)

r? `@ghost`
`@rustbot` modify labels: rollup

Rollup merge of rust-lang#122328 - Enselic:sig_dfl-not-inherit, r=davidtwco

unix_sigpipe: Replace `inherit` with `sig_dfl` in syntax tests

The `sig_dfl` variant of the attribute is the most likely variant to be stabilized first, and thus to become the "most allowed" variant of the attribute. Because of this, it is the most appropriate variant to use in syntax tests, because even if the most allowed variant is used, the compiler shall still emit errors if it e.g. is used in the wrong places.

r? ``@davidtwco`` who already [approved ](rust-lang#120832 (review)) this commit in rust-lang#120832.

It would be nice to land the last preparatory commit of that PR before we begin to [rename ](rust-lang#120832 (comment)) things which will of course create a lot of code conflicts.