extensions: libxt_MASQUERADE: rename IPv4 manpage and tell about IPv6 support

also update list of protocols valid for port mapping.

Signed-off-by: Mart Frauenlob <mart.frauenlob@chello.at>
Signed-off-by: Florian Westphal <fw@strlen.de>
extensions: libxt_LOG: rename IPv4 manpage and tell about IPv6 support

Signed-off-by: Mart Frauenlob <mart.frauenlob@chello.at>
Signed-off-by: Florian Westphal <fw@strlen.de>
Introduce a new revision for the set match with the counters support

The revision add the support of matching the packet/byte counters
if the set was defined with the extension. Also, a new flag is
introduced to suppress updating the packet/byte counters if required.

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>