dvdplayer: fix incorrectly indicated buffered samples after ae7cda6629c7180430a25d834ea83ab5d9f47d77
dvdplayer: only set audio and subtitle indax on user action
guiinfo: fix abuse of settings for current audio and subtitle streams
applicationplayer: cache audio and subtitle index
Merge pull request #4921 from FernetMenta/audiostream

dvdplayer: only set audio and subtitle index on user action
Merge pull request #4901 from FernetMenta/truehd

dvdplayer: fix incorrectly indicated buffered samples after ae7cda6629c7...
[posixdirectory] removed misplaced ; - thanks spiff
Merge pull request #4930 from mkortstiege/semicolon

[posixdirectory] removed misplaced ; - thanks spiff
changed: Remove display of XBOX dvd icon unused code

This would display a XBOX dvd icon if DefaultXboxDVD.png still existed
which doesnt anymore,
change: remove unused xbox overlay support

This is legacy from the xbox days. highly unlikely to ever be used again

ICON_OVERLAY_TRAINED
ICON_OVERLAY_HAS_TRAINER

and removes references to respective unused textures

OverlayTrained.png
OverlayHasTrainer.png