bug#10057: 24.0.91; doc string of `Info-find-file'

[Drew Adams]

> > "Optional second argument NOERROR, if t, means if file is not found
> > just return nil (no error)."
> >
> > This says only what a value of `t' means.  It does not say what
> > other non-nil values mean.  Please state clearly and completely what
> > NOERROR means.
> 
> Do you know other possible non-nil values?

No, not I.  If all non-nil values are treated the same, then the doc should not
single out `t'.  As it stands now, it says "if t, ..." it means ..., which
_suggests_ that that is the case _only_ if t.

Either it is saying the wrong thing (via such a suggestion of "only") or it is
incomplete (saying nothing about other non-nil values).

If what is really meant is "if non-nil,...", then please just say that.