INT 2F U - NETWORK REDIRECTOR - COMMIT REMOTE FILE
        AX = 1107h
        ES:DI -> SFT
            SFT DPB field -> DPB of drive containing file
Return: CF set on error
            AX = DOS error code (see INT 21/AH=59h)
        CF clear if successful
            all buffers for file flushed
            directory entry updated
Note:   called by DOS 3.1+ kernel
SeeAlso: INT 21/AX=5D01h