* ripng_zebra.c, ripngd.[ch]: Pass metric info to the zebra daemon.

	Forwardport from stable branch.
diff --git a/ripngd/ripngd.h b/ripngd/ripngd.h
index 68da71d..b478e9b 100644
--- a/ripngd/ripngd.h
+++ b/ripngd/ripngd.h
@@ -383,7 +383,7 @@
 void ripng_distribute_update_interface (struct interface *);
 void ripng_if_rmap_update_interface (struct interface *);
 
-void ripng_zebra_ipv6_add (struct prefix_ipv6 *p, struct in6_addr *nexthop, unsigned int ifindex);
+void ripng_zebra_ipv6_add (struct prefix_ipv6 *p, struct in6_addr *nexthop, unsigned int ifindex, u_char metric);
 void ripng_zebra_ipv6_delete (struct prefix_ipv6 *p, struct in6_addr *nexthop, unsigned int ifindex);
 
 void ripng_redistribute_clean ();