Mine Model DPM Rev 9

Reviewed all system logic based on the functional specification, which
is in the Quality Management Plan. For train load out, added monitors
for TLO bin emptied, coal quality "current" and "next" which should be
added to the train interface logic. Made the definitions that LA = 0, HA
= 1 and empty queue and TLO = -1. Blending should be easier with these
definitions.
Will add more documentation in next rev.