MPCVideoDec: Updated VP5 video card list. Added additional GeForce GT 520 (0x1040).
cosmetics.
Fix: VobSub subtitles were autoloaded twice.

This commit reimplements 58c9dfec6f4c9cc755ee12bddb8563bc17d86c36 in a different way.

This commit fixes #2864.
Flac Source: Improve timestamps accuracy.

This fixes some cases where the end of the file wasn't played.

This fixes #2859.