fastest-pkg shell script

[Dan Mahoney (Ports)]

Hey folks,

Dayjob occasionally deploys boxes (local anycast root DNS servers) into places with weird and limited connectivity, where routing and geolocation isn't always a reliable metric.

There's "fastest-pkg" in ports, but it's in python which means...you have to be able to fetch packages to use it.

I made a shell variant.  It would be cool if it could be baseified!