NAME
	InitGels -- initialize a gel list; must be called before using gels.

   SYNOPSIS
	InitGels(head, tail, GInfo)
	         A0    A1    A2

	void InitGels(struct  VSprite *, struct  VSprite *, struct  GelsInfo *);

   FUNCTION
	Assigns the VSprites as the head and tail of the gel list in  GfxBase.
	Links these two gels together as the keystones of the list.
	If the collHandler vector points to some memory array, sets
	the BORDERHIT vector to NULL.

   INPUTS
	head  = pointer to the  VSprite structure to be used as the gel list head
	tail  = pointer to the  VSprite structure to be used as the gel list tail
	GInfo = pointer to the  GelsInfo structure to be initialized

   RESULT

   BUGS

   SEE ALSO
	 sc:include/graphics/gels.h   sc:include/graphics/rastport.h