* Created a critical section for the music thread;
* TMd3ModelStaticList created at TGame.Create and destroyed in TGame.Destroy instead of initialization and finalization section;
* Added check if LoadThread is finished before release;
* Correctly release critical sections;
* Fixed bug in TGame.ReleaseDistantTexturesAndModels that failed to release some models with a texture of an already released model, it lead to a model with an invalid texture and a crash.
