INT 21 - Novell NetWare - QUEUE SERVICES - CHANGE TO CLIENT RIGHTS (OLD)
	AH = E3h subfn 74h
	DS:SI -> request buffer (see #01990)
	ES:DI -> reply buffer (see #01989)
Return: AL = status (00h,96h,D0h,D1h,D5h,D9h) (see #01961)
Desc:	temporarily assume the login identity of the client submitting the
	  job being serviced
Notes:	this function is supported by Advanced NetWare 2.1+
	caller must be a job server which has obtained a job for servicing
SeeAlso: AH=E3h/SF=75h,AX=F217h/SF=74h


Format of NetWare "Change to Client Rights (old)" request buffer:
Offset	Size	Description	(Table 01990)
 00h	WORD	0007h (length of following data)
 02h	BYTE	74h (subfunction "Change To Client Rights (old)")
 03h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	(big-endian) object ID of queue
 07h	WORD	(big-endian) job number
SeeAlso: #01989,#01991