Implement new convention that result comes before source. This affects the following Minimal operations
   ADD ANB MOV ORB SUB XOB
so that, for example, the former
	MOV  WA,WB
is now written
	MOV  WB,WA
and
	ADD  WA,WB
which stores the result in WB, is now written
	ADD  WB,WA
This involved changes to Minimal source, the translator, and the Minimal reference manual.