[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/netfilter/xt_sctp.c b/net/netfilter/xt_sctp.c
index c6eb24a..34bd872 100644
--- a/net/netfilter/xt_sctp.c
+++ b/net/netfilter/xt_sctp.c
@@ -200,7 +200,7 @@
 	.me		= THIS_MODULE
 };
 
-static int __init init(void)
+static int __init xt_sctp_init(void)
 {
 	int ret;
 	ret = xt_register_match(&sctp_match);
@@ -214,11 +214,11 @@
 	return ret;
 }
 
-static void __exit fini(void)
+static void __exit xt_sctp_fini(void)
 {
 	xt_unregister_match(&sctp6_match);
 	xt_unregister_match(&sctp_match);
 }
 
-module_init(init);
-module_exit(fini);
+module_init(xt_sctp_init);
+module_exit(xt_sctp_fini);