…iaskrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#107022 (Implement `SpecOptionPartialEq` for `cmp::Ordering`)
 - rust-lang#107100 (Use proper `InferCtxt` when probing for associated types in astconv)
 - rust-lang#107103 (Use new solver in `evaluate_obligation` query (when new solver is enabled))
 - rust-lang#107190 (Recover from more const arguments that are not wrapped in curly braces)
 - rust-lang#107306 (Correct suggestions for closure arguments that need a borrow)
 - rust-lang#107339 (internally change regions to be covariant)
 - rust-lang#107344 (Minor tweaks in the new solver)
 - rust-lang#107373 (Don't merge vtables when full debuginfo is enabled.)

Failed merges:

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

Remove an unneeded helper from the tuple library code

Thanks to rust-lang#107022, this is just what `==` does, so we don't need the helper here anymore.

…riplett

Remove an unneeded helper from the tuple library code

Thanks to rust-lang#107022, this is just what `==` does, so we don't need the helper here anymore.

Rollup merge of rust-lang#118307 - scottmcm:tuple-eq-simpler, r=joshtriplett

Remove an unneeded helper from the tuple library code

Thanks to rust-lang#107022, this is just what `==` does, so we don't need the helper here anymore.

Remove an unneeded helper from the tuple library code

Thanks to rust-lang/rust#107022, this is just what `==` does, so we don't need the helper here anymore.

Remove an unneeded helper from the tuple library code

Thanks to rust-lang/rust#107022, this is just what `==` does, so we don't need the helper here anymore.