extensions: tcp/udp: Save/xlate inverted full ranges

Also translate a bare '-m tcp/udp' to 'meta l4proto' match.

Fixes: 04f569ded54a7 ("extensions: libxt_udp: add translation to nft")
Fixes: fb2593ebbf656 ("extensions: libxt_tcp: add translation to nft")
Signed-off-by: Phil Sutter <phil@nwl.cc>
6 files changed