bug#32220: 27.0.50; Prefer ?* to hide passwords

[Tino Calancha]

Tino Calancha <tino.calancha@gmail.com> writes:

> commit 6b5c3db59650590d9db24ef110b972019b24e03a
> Author: Tino Calancha <tino.calancha@gmail.com>
> Date:   Fri Jul 20 16:58:33 2018 +0900
>
>     Prefer ?* to hide passwords
>     
>     It might be argued that a hidden string is more legible when using
>     ?* as the hidden character instead of ?.
>     For example, the following strings have the same length:
>     "......"
>     
>     "******"
>     
>     It's slighly easier to visually count the number of characters in the 
> second
>     string (Bug#32220).
>     
>     * lisp/subr.el (read-passwd): Prefer ?* as default char instead of ?.
>     * doc/lispref/minibuf.texi (Reading a Password): Update manual.
>     ; * etc/NEWS (Changes in Emacs 27.1): Announce the change.
Eli, which branch is suitable for this patch?  Next release or master?