hone: store uid and loginuid with processes.

loginuid, aka auid or audit uid, is the immutable id of a user when they first log in.
It doesn't change eg. across invocations of su or sudo.
Merge branch 'master' of https://github.com/pmoody-/Linux-Sensor

Fun with git:

Looks like a change was committed twice, I'm trying to remove one of those.