NEW: sysutils/repology

Hi ports --

Attached is a new port, sysutils/repology. Repology is a command line
utility for Repology.org.

I'm sure I'm not the only one who uses repology to track my outdated
ports. With this, I can run a command in my terminal:
repology --maintainer <my-email-address> --outdated

and get all the info I need for my ports that need updating. It's useful
to me and I figure it might be useful to others.

OK?

~Brian