VideoPlayer: fix vob videos restarting at the end

The Medialibrary sometimes doesn't have the media's length, and won't know that the file has ended.

For some files this causes a finished video to keep it's time and when played again starts at the end, and leave the player.

This forces the ML to mark the file as finished and reset it's time

added 46 commits

• 4c2f12a7...32d2f730 - 45 commits from branch videolan:master
• 343f6695 - VideoPlayer: fix vob videos restarting at the end

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enabled an automatic merge when all merge checks for 343f6695 pass

merged