INT 16 - HUNTER 16 - REDEFINE RAW KEY CODES                                     
	AH = 2Ch
	AL = Matrix code of key (see AH=29h)
	BL = new key code
Return: AL = status (00h success, nonzero failed)
Desc:	redefine the key code generated by holding the PAW key down and
	  pressing the key in AL
SeeAlso: AH=24h,AH=2Bh