[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/ccids/Kconfig b/net/dccp/ccids/Kconfig
index 32752f7..8533dab 100644
--- a/net/dccp/ccids/Kconfig
+++ b/net/dccp/ccids/Kconfig
@@ -22,11 +22,11 @@
 	  for lost packets, would prefer CCID 2 to CCID 3.  On-line games may
 	  also prefer CCID 2.
 
-	  CCID 2 is further described in:
-	  http://www.icir.org/kohler/dccp/draft-ietf-dccp-ccid2-10.txt
+	  CCID 2 is further described in RFC 4341,
+	  http://www.ietf.org/rfc/rfc4341.txt
 
-	  This text was extracted from:
-	  http://www.icir.org/kohler/dccp/draft-ietf-dccp-spec-13.txt
+	  This text was extracted from RFC 4340 (sec. 10.1),
+	  http://www.ietf.org/rfc/rfc4340.txt
 
 	  If in doubt, say M.
 
@@ -53,15 +53,14 @@
 	  suitable than CCID 2 for applications such streaming media where a
 	  relatively smooth sending rate is of importance.
 
-	  CCID 3 is further described in:
-
-	  http://www.icir.org/kohler/dccp/draft-ietf-dccp-ccid3-11.txt.
+	  CCID 3 is further described in RFC 4342,
+	  http://www.ietf.org/rfc/rfc4342.txt
 
 	  The TFRC congestion control algorithms were initially described in
 	  RFC 3448.
 
-	  This text was extracted from:
-	  http://www.icir.org/kohler/dccp/draft-ietf-dccp-spec-13.txt
+	  This text was extracted from RFC 4340 (sec. 10.2),
+	  http://www.ietf.org/rfc/rfc4340.txt
 	  
 	  If in doubt, say M.