Fix getEventsNotLooked error (events were not marked as visited)
Fix getEventsNotLooked (again). Some events must not be marked as visited
Add .gitignore
Add audio API skeleton
Add C header file with audio functions based on the Android examples
Add first audio API implementation
Remove pthread include from AudioPlayer
Fix audio API method signatures and some compilation errors
Remove unused audio native C functions
Update AudioPlayer. Audio engine deletion is only done inside the destructor now
Implement first working (with Android) Audio API
Add FileSystem::getFileDescriptor(..) and implement it in AndroidFileSystem
Adapt modules/audio to work with FileSystem::getFileDescriptor