[INET6_HASHTABLES]: Move inet6_lookup functions to net/ipv6/inet6_hashtables.c

Doing this we allow tcp_diag to support IPV6 even if tcp_diag is compiled
statically and IPV6 is compiled as a module, removing the previous restriction
while not building any IPV6 code if it is not selected.

Now to work on the tcpdiag_register infrastructure and then to rename the whole
thing to inetdiag, reflecting its by then completely generic nature.

Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index a79b4f9..960c02f 100644
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -419,9 +419,7 @@
 	---help---
 	  Support for TCP socket monitoring interface used by native Linux
 	  tools such as ss. ss is included in iproute2, currently downloadable
-	  at <http://developer.osdl.org/dev/iproute2>. If you want IPv6 or DCCP
-	  support and have selected IPv6 or DCCP as a module, you need to build
-	  this as a module too.
+	  at <http://developer.osdl.org/dev/iproute2>. 
 	  
 	  If unsure, say Y.