Updated set/SET match and target to support multiple ipset protocols.

By checking the protocol version of the kernel part, the sockopt type
of ipset protocols are all supported. Forward compatibility with the
netlink based protocol is missing.

The --set option of the set match is replaced by --match-set to avoid
clashing with the recent match, but the old option is also kept.

Manpages are updated, references to bindings removed.
5 files changed