Hi,

This patch applies to last Harald's patch bombing. It's based on 
Martin's idea of removing negative values in conntrack protocol helper 
functions. Please see:

http://lists.netfilter.org/pipermail/netfilter-devel/2004-June/015769.html

Now functions packet and error return CONNTRACK_CONT to let the packet 
continue its travel through the conntrack system. It also add a macro to 
increase vars used for stats.

regards,
Pablo