bug#44604: 27.1; gpg error when language environment is set to Turkish

[Eli Zaretskii]

> From: Fatih Aydin <fataydin138@gmail.com>
> Date: Mon, 16 Nov 2020 20:53:00 +0000
> Cc: Fatih Aydın <fatihaydin138@gmail.com>, 
>       Lars Ingebrigtsen <larsi@gnus.org>, 44604@debbugs.gnu.org
> 
> To make things clear, the problem is not only with the network protocols.
> In org-mode I've realized some variables like #TITLE:, :PROPERTIES: don't 
> work.
> I guess no variable works if it has 'i' in it.

Yes, any such text that needs to be downcased will cause similar
problem in this language environment.