NAME   
	InitVPort - Initialize  ViewPort structure.
 
   SYNOPSIS
	InitVPort( vp )
		   a0

	void InitViewPort( struct  ViewPort * );
 
   FUNCTION
	Initialize  ViewPort structure to default values.

   INPUTS
	vp - pointer to a  ViewPort structure

   RESULT
	 ViewPort structure set to all 0's. (1.0,1.1)
       New field added SpritePriorities, initialized to 0x24 (1.2)
 
   BUGS

   SEE ALSO
	 MakeVPort()  sc:include/graphics/view.h