Always inline nullary constructors.  This makes a 
difference in:

	case x ># y of r {
	  True  -> f1 r
	  False -> f2 r
 	}

The code generator currently has difficulty binding "r"
to the boolean result of the comparision (and the compiler
crashes).  This fix substitutes for r, thus:

	case x ># y of r {
	  True  -> f1 True
	  False -> f2 False
 	}

Voila.