po: Use lowercase+underscore names for the replaceable parts of the French usage messages.

[Alexandre Julliard]

Francois Gouget <fgouget at free.fr> writes:

> This brings consistency and this format keeps the spellchecker happy.
>
> Signed-off-by: Francois Gouget <fgouget at free.fr>
> ---
>  po/fr.po | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)

I figured it out this time, but when sending patches that depend on each
other, could you please number them so I don't have to try all possible
orderings?

-- 
Alexandre Julliard
julliard at winehq.org