INT 7F - Alloy MW386 - GET USER LOGIN STATE                                     
	AH = A3h
	DL = user number
	DH = machine number for user
Return: CF clear if successful
	    AL = login state
		00h never logged in
		01h currently logged out
		03h currently logged in
	CF set if invalid user number or user not active
SeeAlso: AH=A2h