Removes streamHear, HandPoll, HandWait and the stream mark; keeps toolEmit. Builds: design 42 zfs-owns-zfs §24, §25, lead answers A-43, A-44
Removes streamHear, HandPoll, HandWait and the stream mark; keeps toolEmit. Builds: design 42 zfs-owns-zfs §24, §25, lead answers A-43, A-44