Bug in cardynamics.cpp ComputeTireFrictionForce code

[LBodnar]

Code:

    btVector3 friction_force = tire[i].GetForce( normal_force, friction_coeff, camber_rads, angvel, lonvel, latvel );

GetForce 3rd argument is in radians while the function expects degrees.

Code:

btVector3 CARTIRE::GetForce (
    btScalar normal_force,                        // Fz, normal_force in N
    btScalar friction_coeff,                    // track surface friction scaling coefficient
    btScalar inclination,                        // camber, degrees
    btScalar ang_velocity,                        // rotational speed, rad/sec
    btScalar lon_velocity,                        // Vx
    btScalar lat_velocity )                        // Vy
{
...
}