fixup! Windows: Always normalize paths to Windows-style

Originally, there was commit 64a8a03, adding an alias for `pwd -W`

In its first rebase, 6583d28, upstream already had a shell function doing the same.
The conflict was resolved by keeping "our" version - the alias, but why?
Is there any chance to convince upstream to accept it?  If not, I would suggest to go with the shell function, which can be done by accepting this PR.