[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/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index a7b194c..460fd90 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -1364,7 +1364,7 @@
 	.checkentry	= icmp_checkentry,
 };
 
-static int __init init(void)
+static int __init ip_tables_init(void)
 {
 	int ret;
 
@@ -1386,7 +1386,7 @@
 	return 0;
 }
 
-static void __exit fini(void)
+static void __exit ip_tables_fini(void)
 {
 	nf_unregister_sockopt(&ipt_sockopts);
 
@@ -1400,5 +1400,5 @@
 EXPORT_SYMBOL(ipt_register_table);
 EXPORT_SYMBOL(ipt_unregister_table);
 EXPORT_SYMBOL(ipt_do_table);
-module_init(init);
-module_exit(fini);
+module_init(ip_tables_init);
+module_exit(ip_tables_fini);