INT 17 - Alloy MW386 - ENABLE/DISABLE FORM FEED                                 
	AH = A4h
	AL = new state
	    00h form feed after end of print job disabled
	    01h form feed enabled
Return: AL = status (see #00642)
Note:	only affects the current logical LPT1
SeeAlso: AH=9Ah,AH=A6h,INT 7F/AH=05h"NTNX (Host)"