Kfsti 668

This is the initial PR  for applying the KC CGB overlay project to KC 6.0. It should obviously be reviewed closely.
I'm interested in what Doug thinks, but I could understand that. How would we do it, and what condition would we base it on? In KFS, we have a config parm that enables/disables CGB, but I'm not sure what exists in KC, or how we would use it here.