INT 6F - 10NET v5.0 - LOGIN                                                     
	AH = 80h
	DS:DX -> login record (see #03776)
Return: CF clear if successful
	    BL = number of days until password expires (00h = never)
	    CL = security level
	CF set on error
	    AX = status (see #03740)
SeeAlso: AH=00h,AH=81h


Format of 10NET login record:
Offset	Size	Description	(Table 03776)
 00h  8 BYTEs	user name
 08h  8 BYTEs	password
 10h 15 BYTEs	server node ID
 1Fh  8 BYTEs	new password
 27h	BYTE	invoke mode (00h command line, 01h interactive)