bug#15803: default-file-name-coding-system: utf-8 better than latin-1 these days?

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: rgm@gnu.org,  15803@debbugs.gnu.org
> Date: Fri, 11 Sep 2020 16:54:46 +0200
> 
> >    make check TEST_LOCALE=<whatever>
> >
> > Does it help to use the locale you have set?
> 
> That allows the files to be compiled, but some tests fail:
> 
> Files examined: 305
> Ran 4241 tests, 4197 results as expected, 5 unexpected, 39 skipped
> 5 files contained unexpected results:
>   src/emacs-module-tests.log
>   src/callint-tests.log
>   lisp/subr-tests.log
>   lisp/net/tramp-archive-tests.log
>   lisp/emacs-lisp/gv-tests.log

Maybe these tests expect some special locale.  For example,
emacs-module-tests could expect UTF-8, since we don't support
non-UTF-8 strings in modules.

Anyway, I think if this is down to a couple of tests, we can install
the changes, as the problems they uncover are elsewhere.