Add Windows support to chmod

[Arcterus]

Looks like it’s possible to use the stuff given here to do this.

[williamhammond]

I think windows goes from a lightweight read-only flag to a fully fledged ACL that I'm not sure can be captured in a chmod command. I'm not sure about the general philosophy of coreutils but do you do windows ports even if it means substantially changing the API for the windows version?

[stale[bot]]

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