NAME
	InitMasks -- Initialize the BorderLine and CollMask masks of a  VSprite.

   SYNOPSIS
	InitMasks(vs)
	          A0

	void InitMasks(struct  VSprite *);

   FUNCTION
	Creates the appropriate BorderLine and CollMask masks of the  VSprite.
	Correctly detects if the  VSprite is actually a Bob definition, handles
	the image data accordingly.

   INPUTS
	vs = pointer to the  VSprite structure

   RESULT

   BUGS

   SEE ALSO
	 InitGels()   sc:include/graphics/gels.h