[DCCP]: Update documentation references.

Updates the references to spec documents throughout the code, taking into
account that

* the DCCP, CCID 2, and CCID 3 drafts all became RFCs in March this year

* RFC 1063 was obsoleted by RFC 1191

* draft-ietf-tcpimpl-pmtud-0x.txt was published as an Informational
  RFC, RFC 2923 on 2000-09-22.

All references verified.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index aaaf4d0..e08e768 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -183,7 +183,7 @@
 		dccp_sync_mss(sk, mtu);
 
 		/*
-		 * From: draft-ietf-dccp-spec-11.txt
+		 * From RFC 4340, sec. 14.1:
 		 *
 		 *	DCCP-Sync packets are the best choice for upward
 		 *	probing, since DCCP-Sync probes do not risk application
@@ -733,7 +733,7 @@
 	dccp_hdr_reset(skb)->dccph_reset_code =
 				DCCP_SKB_CB(rxskb)->dccpd_reset_code;
 
-	/* See "8.3.1. Abnormal Termination" in draft-ietf-dccp-spec-11 */
+	/* See "8.3.1. Abnormal Termination" in RFC 4340 */
 	seqno = 0;
 	if (DCCP_SKB_CB(rxskb)->dccpd_ack_seq != DCCP_PKT_WITHOUT_ACK_SEQ)
 		dccp_set_seqno(&seqno, DCCP_SKB_CB(rxskb)->dccpd_ack_seq + 1);