Small moves to Moto Inheretance

	So it occurs to me that one reasonable sized step that could be taken 
on the road to implementing inheritance in moto would be to give all 
moto objects a class identifier field (could just be a String 
initially) and then add the intelligence in motoi and motoc to identify 
and throw exceptions for bad casts at runtime. This would fix a bad 
potential segfault in moto right now and give us further insight into 
what's needed to implement inheritance fully.

	-Dave