[NETFILTER]: Switch to using ctl_paths in nf_queue and conntrack modules

This includes the most simple cases for netfilter.

The first part is tne queue modules for ipv4 and ipv6,
on which the net/ipv4/ and net/ipv6/ paths are reused
from the appropriate ipv4 and ipv6 code.

The conntrack module is also patched, but this hunk is
very small and simple.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
index 0b5bec3..4ad8d9d 100644
--- a/net/ipv6/sysctl_net_ipv6.c
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -82,17 +82,19 @@
 	{ .ctl_name = 0 }
 };
 
-static struct ctl_path ipv6_ctl_path[] = {
+struct ctl_path net_ipv6_ctl_path[] = {
 	{ .procname = "net", .ctl_name = CTL_NET, },
 	{ .procname = "ipv6", .ctl_name = NET_IPV6, },
 	{ },
 };
+EXPORT_SYMBOL_GPL(net_ipv6_ctl_path);
 
 static struct ctl_table_header *ipv6_sysctl_header;
 
 void ipv6_sysctl_register(void)
 {
-	ipv6_sysctl_header = register_sysctl_paths(ipv6_ctl_path, ipv6_table);
+	ipv6_sysctl_header = register_sysctl_paths(net_ipv6_ctl_path,
+			ipv6_table);
 }
 
 void ipv6_sysctl_unregister(void)