Auto merge of #136728 - matthiaskrgr:rollup-x2qh9yt, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #136640 (Debuginfo for function ZSTs should have alignment of 8 bits, not 1 bit)
 - #136648 (Add a missing `//@ needs-symlink` to `tests/run-make/libs-through-symlinks`)
 - #136651 (Label mismatched parameters at the def site for foreign functions)
 - #136691 (Remove Linkage::Private and Linkage::Appending)
 - #136692 (add module level doc for bootstrap:utils:exec)
 - #136700 (i686-unknown-hurd-gnu: bump baseline CPU to Pentium 4)

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