Remove deprecated --compat-x509-names and --no-name-remapping

Remove deprecated --compat-x509-names and --no-name-remapping

As promised, remove these options for OpenVPN 2.5.

If a user still uses these, print an error that the user should update it's
configuration. Just printing a warning would cause much more confusing
errors, somewhere in middle of a failed connection attempt because the
(non-compat) names no longer match the expected names.

Signed-off-by: Steffan Karger <steffan.karger@fox-it.com>
Acked-by: Arne Schwabe <arne@rfc2549.org>
Message-Id: <1540375925-6111-1-git-send-email-steffan.karger@fox-it.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg17804.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>