Added support for routes other than sfDoctrineRoute.

Hi Sergei!

I have extended your plugin to support routes other than sfDoctrineRoute. For other route classes it just takes the name of the route, all the parameters and adds the different values of `sf_culture` (only if the route takes `sf_culture` as one of the parameters).

Feel free to use all or any of the changes.

Cheers,
Michal