file security and bug fix update

5.04-21 - fix typographical error in changelog 5.04-20 - fix 1037279 - better patch for the bug from previous release 5.04-19 - fix 1037279 - display 'from' field on 32bit ppc core 5.04-18 - fix 664513 - trim white-spaces during ISO9660 detection 5.04-17 - fix CVE-2014-3479 cdfcheckstreamoffset...