Re: scratch/accurate-warning-pos: Solid progress: the branch now bootstraps.

[Eli Zaretskii]

> Cc: Eli Zaretskii <address@hidden>, address@hidden,
>  address@hidden, address@hidden, address@hidden
> From: Paul Eggert <address@hidden>
> Date: Tue, 27 Nov 2018 13:37:29 -0800
> 
> There's a simpler way to do a double interpreter. Use a compile-time 
> test to decide whether eq operates slowly. Build two copies of Emacs, 
> the slow one and the fast one, by compiling the slow one with -DSLOW_EQ 
> (or whatever). Use the slow Emacs to byte-compile Emacs (and any other 
> program that wants to be byte-compiled); this will output nicer 
> diagnostics. Use the fast Emacs for everything else.

So end-users will also build 2 binaries, and use the other one to
byte-compile their Lisp programs and Emacs Lisp code they've changed?