bug#22392: Emacs OS X GUI doesn't set locale

[Random832]

Paul Eggert <eggert@cs.ucla.edu> writes:
> I looked around, and it appears the GnuCash ran into a similar
> problem. You might want to look at its solution, in:
>
> https://github.com/Gnucash/gnucash/blob/master/src/bin/gnucash-bin.c

AFAIK GnuCash does not do much with subprocesses, so the fact that it
doesn't place the locale in its environment (or use UTF-8) doesn't
provide much useful guidance.