iptables-nftables-compat: include compat tools (links)

Compat tools are links to the xtables-compat binary. Include them
in the iptables-nftables-compat binary package.
Signed-off-by: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>

debian/iptables-nftables-compat.install

+usr/sbin/*-compat*		sbin
 usr/sbin/xtables-compat-multi	sbin
 lib/xtables/libebt_*.so
 lib/xtables/libarpt_*.so