[PATCHv2] gdbserver: Add .dir-locals.el file

[Eli Zaretskii]

> Cc: gdb-patches@sourceware.org, Eli Zaretskii <eliz@gnu.org>
> From: Pedro Alves <palves@redhat.com>
> Date: Mon, 2 Mar 2020 17:34:20 +0000
> 
> > I'm not aware of a way to import one .dir-locals from another, I did
> > some searching and couldn't find anything promising.
> > 
> 
> Let's ask an Emacs maintainer.
> 
> Eli, what's the best way to handle this?

Put a single file in the parent directory of those 3, I think.