INT 21 - DOS 3.1+ - IOCTL - CHECK IF HANDLE IS REMOTE
        AX = 440Ah
        BX = handle
Return: CF clear if successful
            DX = attribute word (as stored in SFT)
                bit 15: set if remote
                bit 14: date/time not set on close
        CF set on error
            AX = error code (01h,06h) (see AH=59h)
Notes:  if file is remote, Novell Advanced NetWare 2.0 returns the number of
          the file server on which the handle is located in CX
        DR-DOS 3.41 and 5.0 clear all bits of DX except bit 15
SeeAlso: AX=4400h,AX=4409h,AH=52h,INT 2F/AX=122Bh

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