Bug fixes & modifications on your XBMC addon

Here is the changelog of my modifications with some comments:
- _fixed: addon not able to handle paths with accents on windows_
  - I'm using XBMC on Windows and some of my sources contains accents (ie Séries) and I remarked that switching to CP1252 encoding makes watchdog to work
- _fixed: quote executebuiltin parameters_
  - Following some changes on your last version, you forgot to escape the quoted executebuiltin parameters
- _added stricter triggering of library scan & clean based on file type_
  - I have extended the file type filtering on creations and moves in order to scan/clean only what really needs to
- _added options for updating library on startup_
- _added option for cleaning library on startup_
- _added options for exporting .nfo files_
  - About these new options, as I use an external software that reads that kind of file, I wanted to have always these files generated by XBMC when I add new video to my library whether XBMC is running or not
- _added french translations_

If you have any question, don't hesitate to ask.

Thilas