Correct diacritics in Romanian language files. 

The correct diacritics for Romanian are those with comma-below (ȘșȚț). Old operating systems like Windows XP didn't recognize them so they were sometimes replaced by diacritics from languages that use similar cedilla-below characters.
But since then native Romanian characters are fully supported on all kinds of operating systems and devices. So the official and correct ones should be used in software.

I used a sed-based script to correct the language files.