#756 MPC fails to render when path includes non-latin chars

[Baris Unver]

My language (Turkish) has non-latin characters like:

- s with a scedilla (ş)
- the little i without a dot (ı)
- the big i with a dot (İ)
- a letter which I cannot describe (ğ)

So, when the video name or video path includes one of these characters, MPC alyways says "Failed to render the file". For example, this one fails:
C:\Barış\video.mov
And this one fails, too:
C:\Baris\şebelek.mov
And of course, this one fails also:
C:\Barış\şebelek.mov
But this one does not:
C:\Baris\video.mov

Can you fix it? By the way, it's been happening for a loooooong time, I had the same problem many many versions ago.