probes2kml update

I've made a few changes to the script:
Display probe Id, CC, status, IP4/6 ASN and prefix in description field.
Match dual-stack probes and add new iconstyle. IPv4 connectivity is
assumed.
Fetch data using HTTP (removed STDIN option for convenience).

Sample output:
http://www.infornografia.net/atlas/activeprobes.html
http://www.infornografia.net/atlas/activeprobes.kml