Auto merge of #125358 - matthiaskrgr:rollup-mx841tg, r=matthiaskrgr

Rollup of 7 pull requests

Successful merges:

 - #124570 (Miscellaneous cleanups)
 - #124772 (Refactor documentation for Apple targets)
 - #125011 (Add opt-for-size core lib feature flag)
 - #125218 (Migrate `run-make/no-intermediate-extras` to new `rmake.rs`)
 - #125225 (Use functions from `crt_externs.h` on iOS/tvOS/watchOS/visionOS)
 - #125266 (compiler: add simd_ctpop intrinsic)
 - #125348 (Small fixes to `std::path::absolute` docs)

Failed merges:

 - #125296 (Fix `unexpected_cfgs` lint on std)

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

Author: bors