Stop from-parent triggering from-child pieces WIP
Stop from-parent triggering from-child pieces WIP

I've managed to break the echo test somewhere in the past few
commits (which I really did all in one fell swoop...I just broke them
into smaller pieces to make it easier for me to remember what each
change was for), and this seems like the most likely culprit.

It also broke my "stop message loop" functionality: while I've been
writing these commits, I see it triggering once a minute.

This is definitely a right thing to do, even though I have the details wrong.

jimrthy/frereth-cp,jimrthy/frereth-cp,jimrthy/frereth-cp