bug#57911: Abolish max-specpdl-size

[Gregory Heytings]

> Whatever it is that's going on, it seems to be getting worse.  For 
> instance, this message via debbugs (from Eli) took over four hours to 
> arrive:

Your post shared the same fate.  Apparently it's during the process of 
expanding the mailing list name to its individual members, on 
lists.gnu.org, that the long delay is introduced.