bug#25360: File mode specification errors during building

[Eli Zaretskii]

> Date: Mon, 6 Mar 2017 21:25:54 -0000
> From: "Phillip Lord" <phillip.lord@russet.org.uk>
> Cc: "Noam Postavsky" <npostavs@users.sourceforge.net>,
>  phillip.lord@russet.org.uk,
>  25360@debbugs.gnu.org
> 
> Here's a question, though. Why does files.el use
> w32-convert-standard-filename, a function which is not actually
> autoloaded? Ditto dos-convert-standard-filename.

They are in files that are preloaded on the platforms which need them,
so they are always available.