Make divert lookup similar for all socket types. If PF_TAG_DIVERTED

Make divert lookup similar for all socket types.  If PF_TAG_DIVERTED
is set, pf_find_divert() cannot fail so put an assert there.
Explicitly check all possible divert types, panic in the default
case.  For raw sockets call pf_find_divert() before of the socket
loop.  Divert reply should not match on TCP or UDP listen sockets.
OK sashan@ visa@