Added makefiles, fixed Pacejka, other fixes and improvements. - Added experimental makefiles. - Finally fixed Pacejka / slip ratio simulation at low speeds. - Added switch to choose simulation mode. - Fixed bugs with neutral gear position. - No longer reset auto-gear switch when pressing 'R' - Improved syncing between engine RPM and wheel angular speed. Now it's no longer instantaneous. - Less air drag for bikes. - Fixed rolling resistance too strong. - Added simple downforce computation. - Added tire load sensivity to strafe speed. - Improved options menu ui. - Improved vehicle selection screen. - Removed topdown example from all build config. Create specific build configs for it. - Refactorings.