netfilter: xt_iprange: module aliases for xt_iprange

Using iptables 1.3.8 with kernel 2.6.25, rules which include '-m
iprange' don't automatically pull in xt_iprange module.  Below patch
adds module aliases to fix that.  Patch against latest -git, but seems
like a good candidate for -stable also.

Signed-off-by: Phil Oester <kernel@linuxace.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>