Bug#237403: Final version of french translation

[Christian Perrier <bubulle@debian.org>]

Finally, after rebuilding the apt-all.pot file, I managed to have the
correct 457 messages reference file and thus I could update the frnech
translation of apt messages.

Please use the attached fr.po file in po/fr.po. Sorry for the
confusion....which indeed comes from an outdates apt-all.pot file in
the package source tree

I'll notify other translators in recent bugs you marked as "pending"
because some of these translations had the same problem
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