Browsing French translation

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Starting with version 0.6, <command>APT</command> contains code that does signature checking of the Release file for all repositories. This ensures that data like packages in the archive can't be modified by people who have no access to the Release file signing key. Starting with version 1.1 <command>APT</command> requires repositories to provide recent authentication information for unimpeded usage of the repository. Since version 1.5 changes in the information contained in the Release file about the repository need to be confirmed before APT continues to apply updates from this repository.