[NETFILTER]: Rename init functions.

Every netfilter module uses `init' for its module_init() function and
`fini' or `cleanup' for its module_exit() function.

Problem is, this creates uninformative initcall_debug output and makes
ctags rather useless.

So go through and rename them all to $(filename)_init and
$(filename)_fini.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index db3c9ae..3ecf2db 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -1406,7 +1406,7 @@
 	.family		= AF_INET6,
 };
 
-static int __init init(void)
+static int __init ip6_tables_init(void)
 {
 	int ret;
 
@@ -1429,7 +1429,7 @@
 	return 0;
 }
 
-static void __exit fini(void)
+static void __exit ip6_tables_fini(void)
 {
 	nf_unregister_sockopt(&ip6t_sockopts);
 	xt_unregister_match(&icmp6_matchstruct);
@@ -1517,5 +1517,5 @@
 EXPORT_SYMBOL(ip6t_ext_hdr);
 EXPORT_SYMBOL(ipv6_find_hdr);
 
-module_init(init);
-module_exit(fini);
+module_init(ip6_tables_init);
+module_exit(ip6_tables_fini);