* kame/sys/netinet6/natpt_{defs,dispatch,trans,tslot,var}.[ch]: - Support translation from fragmented IPv6 packet to IPv4.   IPv4 packet is also fragmented.
* kame/sys/netinet6/natpt_{defs,dispatch,trans,tslot,var}.[ch]:
- Support translation from fragmented IPv6 packet to IPv4.
  IPv4 packet is also fragmented.

  Restriction: The first fragmented packet must have all of
  header of ICMP/TCP/UDP, because this translation does not
  support assembly of fragmented packets.

MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame,MarginC/kame