INT 21 - Novell NetWare v3+ - SCAN FILE OR DIRECTORY FOR EXTENDED TRUSTEES
        AX = F216h subfn 26h
        CX = length of request buffer in bytes
        DX = length of reply buffer in bytes
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status
Desc:   get up to 20 extended trustee entries per call for a file or directory

Format of request buffer:
Offset  Size    Description
 00h    WORD    length of following data
 02h    BYTE    26h (subfunc "Scan File or Directory For Extended Trustees")
 03h    BYTE    directory handle
 04h    BYTE    sequence number
                00h for first call, increment by number of returned entries
 05h    BYTE    length of path
 06h  N BYTEs   pathname

Format of reply buffer:
Offset  Size    Description
 00h    BYTE    number of entries returned (max 20)
 01h 20 DWORDs  (big-endian) list of object IDs
 51h 20 WORDs   list of associated trustee rights

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