Overhaul EOB handling... just count them, and reset both to zero on non-EOB
in either direction. For v1.0, a single EOB in both directions terminates the session and for v1.1, two EOBs in both directions terminates. This should greatly simplify the overly complicated senteob/sentempty/goteob/ gotempty logic and completely eliminate loops. Biggest risk with this change is issues with v1.0 servers.