[IPlayer et al.] Replace various Getxxx methods with GetxxxStreamInfo methods

This PR removes various * ```GetAudioXxx, GetSubtitleXxx and GetVideoXxx``` methods

from all players and replaces them with ```GetXxxStreamInfo(int iStream, SPlayerXxxStreamInfo &info)```.

See commit messages for exact method names.

All affected places are adapted.

Since I'm on windows I have only check this. I could use some help/feedback from other platform devs.