Add test case for subclassing NSObject.
Add test case for subclassing NSObject.

mralexgray/NodObjC,mralexgray/NodObjC,TooTallNate/NodObjC,jerson/NodObjC,telerik/NodObjC,jerson/NodObjC,telerik/NodObjC,TooTallNate/NodObjC,jerson/NodObjC