bug#36478: 26.2; Doc strings with "This function has a compiler macro..." and "This function does not change global state"

[Eli Zaretskii]

> Date: Tue, 2 Jul 2019 11:05:18 -0700 (PDT)
> From: Drew Adams <drew.adams@oracle.com>
> 
> `C-h f zerop' tells you this:
> 
>  zerop is a compiled Lisp function in 'subr.el'.
> 
>  (zerop NUMBER)
> 
>  This function has a compiler macro 'zerop--anon-cmacro'.
> 
>  Return t if NUMBER is zero.
>  This function does not change global state, including the match data.
> 
> Why on earth would we put that info about the function having a compiler
> macro before the first doc string line?

The parts that got you so worked up are generated automatically.