bug#15794: Core dump after SIGTERM during GC marking

[Eli Zaretskii]

> From: Andreas Schwab <schwab@linux-m68k.org>
> Cc: 15794@debbugs.gnu.org,  gundaetiapo@gmail.com
> Date: Sun, 03 Nov 2013 23:22:31 +0100
> 
> >> Even auto-save is a no-no in a signal handler.
> >
> > I don't see why.  Auto-save takes care to do only predictable things.
> 
> A lot of things that are a no-no in a signal handler, like calling
> auto-save-hook.

We could disable that (and the other things) as well.