Show ICMP ID and seqno in packet trace by default.

This was previously limited to ippackethdrinfo's medium detail and
above, which required -v in Nping and -d2 in Nmap.
Require -v for 'Tx time' and friends in Nping.
Keep min/max/avg rtt outputs down to -q.
Note some done tasks
Use binary strings, not hex strings, internally in ike-version.

Patch by Jesper Kückelhahn.
http://seclists.org/nmap-dev/2013/q1/152
Get rid of ntohs in ip6_ntop.

Byte-swapping is handled by the initial loop that reads into an array of
16-bit integers. That initial loop was added by me in r29708.
Add .gitignore
Initial work on NNTP capability gathering.
Add google-search-appliance script.
Try disabling TLSv1 to get some SSLv3-only servers to work.
Optional matches are cheaper than empty alternative matches.
Some pending work, part 2.
Add HP iLO2 telnet match. Update HP iLO telnet match.
Add survivor remote agent (permission denied)
Remove unneeded Zimbra LMTP match line.
Update NNTP server matches.
Comment out nntp-capabilities for now.
Service probe for ESAWEB on z/VM
Add URI pop3d.
Add z/VM fingerd