[TCPDIAG]: Just rename everything to inet_diag

Next changeset will rename tcp_diag.[ch] to inet_diag.[ch].

I'm taking this longer route so as to easy review, making clear the changes
made all along the way.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dccp/diag.c b/net/dccp/diag.c
index 4d9037c..9f07eff 100644
--- a/net/dccp/diag.c
+++ b/net/dccp/diag.c
@@ -16,10 +16,10 @@
 
 #include "dccp.h"
 
-static void dccp_diag_get_info(struct sock *sk, struct tcpdiagmsg *r,
+static void dccp_diag_get_info(struct sock *sk, struct inet_diag_msg *r,
 			       void *_info)
 {
-	r->tcpdiag_rqueue = r->tcpdiag_wqueue = 0;
+	r->idiag_rqueue = r->idiag_wqueue = 0;
 }
 
 static struct inet_diag_handler dccp_diag_handler = {