Audio stuff: Cleanup, delete dead code
Win32: Keep DSound running even when in the menu.

This will make it possible to play the game-selection audio later.
Oops, buildfixes
Play the game's SND0.AT3 when a game is selected in the menu and on the "game screen".
Just zero the buffer if we failed to open the file
bg audio: Sprinkle on some thread safety
Update native (second constructor for chunkfile)
Lost-keyboard-focus fix in native
Minor perf fix in SimpleAudio: Lazily create resampling contexts once instead of every audio frame
BG music: Zero the sample buffer on decode fail
Qt: Fix up lrelease path when outside of qtdir and version string for Symbian.
Fix issue where the "background audio game" could get cleared by mistake.

Takes care of the case of going to the game menu through Triangle.
More focus handling issue fixing
Have SimpleAudio respect channels/samplerate passed in
Fix android build
Play AT3 files in background audio too.

Fixes 3rd Birthday and PQ2, at least.
Clear dataLoaded flags after clearing data.

Seems to fix some race for me with background icons showing up black.
Maybe a double load?
Add a safety check.
Merge pull request #6394 from unknownbrackets/menu-audio

Add AT3 support for background audio
Merge pull request #6393 from hrydgard/menu-audio

Play the game's SND0.AT3 when a game is selected in the menu and on the "game screen".