bug#46790: 28.0.50; make install with native-comp branch

[Eli Zaretskii]

> From: Thierry Volpiatto <thievol@posteo.net>
> Cc: akrl@sdf.org, psainty@orcon.net.nz, 46790@debbugs.gnu.org
> Date: Sun, 25 Apr 2021 14:02:07 +0000
> 
> > In any case, what error messages do you see with async-start now? can
> > you show those messages in their entirety?
> 
> Nothing more helpful than the output in *emacs* buffer process I sent
> previously.

So the async-start invocation crashes with a backtrace?  And the file
names of the *.eln files shown in the backtrace are the correct file
names?