bug#73709: 29.4; Doc of `file-newer-than-file-p'

[Drew Adams]

> So these are the conceptual difficulties we bump into when we go down
> to this low level.

There's no reason to go down to a low level
to fix this doc bug for `file-newer-than-file-p'.

Your discussion of details might be valuable
for some other doc changes, but it's not
necessary to go into such detail for the doc
of this predicate.

A simple improvement of this doc shouldn't be
a problem.  Let not the perfect become the
enemy of the good.