[Coco] NitrOS9 and 6309 code

[Robert Gault]

Fchain.asm also looks for obj6309.

*--- these lines added to allow 6309 native mode modules to be executed
          cmpa   #Prgrm+Obj6309 regular module?
          beq    L04FB       yes, go
          cmpa   #Systm+Obj6309 system module?
          beq    L04FB


Robert