Timeouts for WAIT commands

[FIREdog5]

add a timeout for wait commands, after which the test will fail. Maybe set a default timeout and add an UNTIL option to WAIT?

[FIREdog5]

ok, there are several parts to this:

1. decide how to implement time outs:
   • spawn new thread for each WAIT and have these yield to the events queue
   • use the queue.get(block = True, timeout = <shortest>) and recalculate the timeout whenever an event is gotten from the queue.
     • theoretically cleaner
     • might make part 3 harder
2. decide how to specify timeouts
   • a global timeout statement, and individual timeout commands for WAITs?
3. write a system to detect when chained waits timeout. (This is kinda the opposite of when we decide to move on)
   • for OR, both must time out
   • for AND, just one must time out
   • can maybe exploit python's ands and ors, but inverting the inputs? not (not timedout or not timedout) would work for the or

[FIREdog5]

1. using queue.get's timeout's
2. global timeouts only.
3. skip this.