bug#29766: 25.3; REGRESSION, Dired on MS Windows, switches -alF

[Drew Adams]

> > I suppose it's good for people using multiple platforms
> > (consistency).  But since different platforms have
> > (apparently) such different outside-Emacs behaviors,
> > perhaps an alist of values, keyed by platform in some
> > way, would be better.  Then the defaults for common
> > platforms could be preconfigured according to what
> > users of those platforms might expect.  And a user
> > of multiple platforms could opt for either the same
> > behavior everywhere or different behaviors here and
> > there.  Just something to think about, I guess.
> 
> We already have plenty of such customization options
> in ls-lisp.el, had them for a long time.

What option(s) in ls-lisp.el correspond to such an alist?
I don't see any.  And if there is already such an option,
let alone plenty of them, then why did we add
`ls-lisp-use-string-collate'?

Sure, there are plenty of options in ls-lisp.el.  But
which of them are relevant here?