INT 21 U - DOS 3.1+ internal - SHARE.EXE - CLOSE ALL FILES FOR GIVEN PROCESS
        AX = 5D04h
        DS:DX -> DOS parameter list (see AX=5D00h), only computer ID and
                process ID fields used
Return: CF set on error
            AX = error code (see AH=59h)
        CF clear if successful
Notes:  error unless SHARE is loaded (calls [SysFileTable-2Ch]) (see AH=52h)
        not supported by DR-DOS 3.41 and 5.0; returns error code 01h
SeeAlso: AX=5D02h,AX=5D03h,INT 2F/AX=111Dh

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