newfon synthDriver: convirt to new synth system as best as possible. Use Ordered dictionaries for the availableX string properties. The availableLanguages property now uses LanguageInfo objects, which means that the full descriptions are no longer hardcoded... if this is no good these could be changed back. Use the real SynthDriver.LanguageSetting as it now exists, and newFon's language is synth-wide. Also change rus to ru and ukr to uk to confirm to proper locale names like in the rest of NVDA.