Merge pull request #3460 from FernetMenta/vdpau

vdpau: check for GL_NV_vdpau_interop in open
refactor audio settings page
dvdplayer: adapt to changes in audio settings
paplayer: adapt to changes in audio settings
GUIDialogAudioSettings: adapt to changes in audio settings
ActiveAE: adapt to changes in audio settings
SoftAE: farewell!
adapt toggle passthrough to change in audio settings
update VS project after removal of SoftAE
fix linker error on Windows after removal of SoftAE
AudioSettings: Remove AAC Setting for passthrough
[rbp] Update to work with new audio settings
remove a bunch of obsolete advanced settings related to audio
[osx/ios/atv2] - sync xcode project
[AE/CA] - fix hidden settings for darwin
[AE/CA] - adapt to new audiosettings page
[translation] - add a note to channel config help message about spdif
[AE] - don't allow DTS if it is disabled in settings
videoplayer: adapt lateness detection and dropping to buffering
video player: present correct pts to user for a/v sync (after buffering in renderer)