Subject: bug#64613: Signalling byte ops should show up in backtraces

From: Mattias Engdegård <[email-masked]>
Date: Fri, 14 Jul 2023 19:51:51 +0200

A small improvement, only covering car, cdr, setcar, sector, and (partially) nth and elt, was pushed in 8acd52bba4.
This is low-hanging fruit and worth doing for the benefit it brings even if we end up using a more general solution later on.