Make cpp part compatible with OSim3.2, as OSim4.0 won't be released soon
Make cpp part compatible with OSim3.2, as OSim4.0 won't be released soon

MuscleOptimizer/MuscleOptimizer,MuscleOptimizer/MuscleOptimizer,MuscleOptimizer/MuscleOptimizer,MuscleOptimizer/MuscleOptimizer