bug#23369: 25.0.93; CANNOT_DUMP build fails if resizing terminal during startup in tty mode

[Eli Zaretskii]

> From: Glenn Morris <rgm@gnu.org>
> Cc: fredrik@fornwall.net,  23369@debbugs.gnu.org
> Date: Wed, 27 Apr 2016 12:36:33 -0400
> 
> It's ugly to (essentially) modify all uses of save-selected-window just
> because of one (?) problematic use in an edge case. I wonder if we can
> find and fix whatever code is calling it in this case. Presumably
> something window-related that happens during resizing.

I'd still like to see a full backtrace when the problem happens, both
C and Lisp level.

> Also, it seems like if CANNOT_DUMP builds encounter an error loading
> loadup.el, they go on to run the command-loop with only a partially
> loaded loadup, which leads to confusing error messages that have nothing
> to do with the real problem. Can they be made to abort instead?

How will aborting help diagnosing the problems?  IME, it tends to hide
evidence, not make it more clear.