ODE wait bar

Graphical waitbar printing ODE solver progress

When the function odewbar is passed to an ODE solver as the 'OutputFcn' property, i.e. options = odeset('OutputFcn',@odewbar), the solver calls ODEWBAR(T,Y,'') after every timestep. The ODEWBAR function shows a simple waitbar with the progress of the integration every 0.2 seconds.