rework `#[naked]` attribute parser

r? `@oli-obk`

Rollup of 5 pull requests

Successful merges:

 - #142493 (rework `#[naked]` attribute parser)
 - #142636 (bootstrap.example.toml: use less contextual format)
 - #142822 (Make `PartialEq` a `const_trait`)
 - #142892 (Fix ICE on debug builds where lints are delayed on the crate root)
 - #142904 (notify me when rdg is touched)

Failed merges:

 - #142827 (Move error code explanation removal check into tidy)

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

Rollup merge of #142493 - jdonszelmann:naked, r=oli-obk

rework `#[naked]` attribute parser

r? ``@oli-obk``

Port `#[track_caller]` to the new attribute system

r? `@oli-obk`

depends on rust-lang#142493

Closes rust-lang#142783

(didn't add a test for this, this situation should simply never come up again, the code was simply wrong. lmk if I should add it, but it won't test something very useful)

Port `#[track_caller]` to the new attribute system

r? ``@oli-obk``

depends on rust-lang#142493

Closes rust-lang#142783

(didn't add a test for this, this situation should simply never come up again, the code was simply wrong. lmk if I should add it, but it won't test something very useful)

Rollup merge of #142825 - jdonszelmann:track-caller, r=oli-obk

Port `#[track_caller]` to the new attribute system

r? ``@oli-obk``

depends on #142493

Closes #142783

(didn't add a test for this, this situation should simply never come up again, the code was simply wrong. lmk if I should add it, but it won't test something very useful)