add the no encryption entry.
don't write a char to a pointer.
PR/299: New fersion for SPSS.
PR/287: Add another lzma case; there is no reliable way to check the format.
PR/286: Default encoding is binary.
PR/289: Leave the database loaded in case of list, check, compile.
PR/290: Rewrite xilinx to use pascal strings instead of hard-coded constants.
PR/293: Christian Hesse: Correct linux offset computation.
PR/294: Fix file [--special-files]|[--mime-encoding] <one-byte-file>|<empty-file>
PR/295: Add EWF file format
PR/296: Add more BMP images
PR/298: Add CDR6 for Corel Draw 6.
PR/297: Better RRD detection