* sm/gpgsm.c (main): Add AES192 cipher. Allow SERPENT256.
--
Note that currently released Libcgrypt versions miss OIDs for Serpent
and thus Serpent can only be used with tye forthcoming Libgcrypt
1.7.1.
(backport of master commit 5f9bd7a9e1ed4edcbb6c4e908d4bea5cd7dc9e68)
GnuPG-bug-id: 2273, 2934
Signed-off-by: Werner Koch <wk@gnupg.org>