Log Message:
Update mediainfo to 0.7.9.

Version 0.7.9, 2009-01-19
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+ OGG: Dirac support
+ OGG: Speex support
+ OGG: other formats (JNG, Kate, MIDI, PCM...) detection
+ SWF: detection of more audio streams
+ MPEG-PS: Handling of PlayStation2 audio
+ #2474119, Minimal MZ (PE) and ELF detection
+ SMV (WAV/ADPCM+JPG files) file format support
+ DPG (Nintendo DS) file format support
+ QuickTime: TimeCode track analysis
+ MPEG-4 subtitles: difference between 'text' and 'tx3g' codecIDs
x Python binding update for more compatibilty
x #2474280, OGG: handling of files with Skeleton Metadata
x #2445654, OGG: better false-positives detection
x #2493685, AVI: Wrong video duration for some malformed 4GB+ AVI/DV files
x #2516007, "Language" raw tag was sometimes 3 letter long instead of \ 
2-letter long
x Floating point overflow correction