[ardour-dev] update for french po file + export bug

[Christophe Combelles]

Hi

There is an update for the french po file
http://gorfou.fr/contrib/ardour/fr_FR.2.0rc1.po

Could you commit it? It contains an important workaround for bugs
http://tracker.ardour.org/view.php?id=1591
http://tracker.ardour.org/view.php?id=1592
I suppose they should affect all localized version of ardour,
  it prevents from setting the CUE/TOC and the framerate in the export dialog.

In the po file, the workaround is just to avoid translating the strings.

Christophe