Switch to debian "native" package type.

Change-Id: I7db0f7d27de130db63e75c9e7c84242f21c63aa4
Little bit of rss-bot cleanup.

Moved most of the action into a main function, and did a bit of style
cleanup.

Change-Id: I10b1d88178c002ae4bfddcaec1b8fe8f9fb6f59c