.mailmap: fix and expand mappings for Jean-Noël Avila

The latest release candidate notes say that there is a new contributor:

    Jean-Noël Avila via GitGitGadget, ...

But this is a familiar face, just in a G.G. Gadget trench coat.

Also map the rest of the idents in the history.

Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: LemmingAvalanche

.mailmap

@@ -107,6 +107,9 @@ Jason Riedy <ejr@eecs.berkeley.edu> <ejr@cs.berkeley.edu>
 Jay Soffian <jaysoffian@gmail.com> <jaysoffian+git@gmail.com>
 Jean-Noël Avila <jn.avila@free.fr> Jean-Noel Avila
 Jean-Noël Avila <jn.avila@free.fr> Jean-Noël AVILA
+Jean-Noël Avila <jn.avila@free.fr> Jean-Noel Avila <jean-noel.avila@scantech.fr>
+Jean-Noël Avila <jn.avila@free.fr> Jean-Noël AVILA <avila.jn@gmail.com>
+Jean-Noël Avila <jn.avila@free.fr> Jean-Noël Avila via GitGitGadget <gitgitgadget@gmail.com>
 Jeff King <peff@peff.net> <peff@github.com>
 Jeff Muizelaar <jmuizelaar@mozilla.com> <jeff@infidigm.net>
 Jens Axboe <axboe@kernel.dk> <axboe@suse.de>