So that src/dst addresses used in pseudo-header are correct when
there's certain extension headers (routing/destination).
Add ICMP/ICMPv6 checksum unit tests.
- Accessible at script-layer through 'mobile_ipv6_message' event.
- All Mobile IPv6 analysis now enabled through --enable-mobile-ipv6
configure-time option, otherwise the mobility header, routing type 2,
and Home Address Destination option are ignored.
- flow_weird event with name argument value of "routing0_hdr" is raised
for packets containing an IPv6 routing type 0 header because this
type of header is now deprecated according to RFC 5095.
- packets with a routing type 0 header and non-zero segments left
now use the last address in that header in order to associate
with a connection/flow and for calculating TCP/UDP checksums.
- added a set of IPv4/IPv6 TCP/UDP checksum unit tests
