WIP: phobos: Fixes for GNU/Hurd.

[yelninei]

Depends on dlang/dmd#22829

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Testing this PR locally

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[yelninei]

Failures not caused by D:

• rename(null, "") : std/file.d:982
• delete(null) : std/file.d::1117

libc crashes because of the null pointer.

I wont be looking into maybe working around this on the D side for now as the priority is more on getting druntime to work properly, but I want to have this mentioned somewhere