- adding a new target to "Makefile.am" (and to 'dist-hook' there).

Right?

However I see an issue with the autogenerated AUTHORS.  There will be
duplicates since people not always use a single name/e-mail.  For
example, there are:

Joshua S. Grant <youlysses@riseup.net>
Joshua S. Grant <jgrant@parenthetical.io>
Joshua Grant <tadni@riseup.net>
Guy Grant <tadnimi@gmail.com>

or even:

Ludovic Courtès <ludo@gnu.org>
Ludovic Courtès <ludovic.courtes@inria.fr>