between cabextract.c and fdi.c - reminders to eliminate global variables (for multithread compatibility) - remove struct fdi_cab: due to the nature of the FDI API, we cannot preload all the cabinets; this appears to obviate the need for struct fdi_cab - "oppress" (that is, do not process) partial files which were continuations from another cabinet - more than one partial file can exist in a single cabinet (how!?) -- so move the partial file notification (and "oppression" that goes with it) into the loop that iterates through files