kstart 3.0

I figure adding a new program is worth a major version bump.

Buck Huppmann pointed out that it would be nice if k5start could do K5 ticket renewal rather than always obtaining a new ticket, since you can do a renewal of a renewable ticket without having to have a keytab (at least up to its renewable lifetime). After thinking about that for a bit, I realized that we actually need that at Stanford to replace our old ugly keeptoken program that reauthenticates a user to K4. So I started poking at it during my surprisingly productive day and ended up finishing it off tonight.

While I was at it, I also removed the pointless executability check to make sure that aklog could be run, since it prevented people from setting KINIT_PROG to something including flags. Adam Megacz reported that one. (It's great to see these programs used by other people!)

You can get the latest version from the kstart distribution page.

Now, bed. Tomorrow, football.