Don't /usr/share/xt_geoip/ which is needed to build database into.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

The iptables-mod-geoip is usually used in conjunction with some
wrapper scripts which manipulate the GeoIP database and then kick out
one or more iptables rules.  This package contains (1) the script to
download the most recent version of the MaxMind freemium database and
(2) another script which mangles the database into sets up iptables
rules.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

This commit moves xtables-addons from
https://github.com/openwrt/openwrt/tree/master/package/network/utils/xtables-addons
into the package feed repository to allow for dependencies on other feed
packages, such as Perl.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>
[fix commit message]
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

Signed-off-by: Jo-Philipp Wich <jo@mein.io>