IncLatVelToAzimuthHeading:

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   Compute azimuth and heading req.d at lat. and V to reach inclination.
   Since version 1.0
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   Form:
   [beta,psi] = IncLatVelToAzimuthHeading( inc, lat, V, rotation );
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   Inputs
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   inc             (1,1)     Desired inclination (rad)
   lat             (1,1)     Current latitude (rad)
   V               (1,1)     Current airspeed velocity (km/s)
   rotation        (1,1)     Flag. Consider Earth rotation (1) or not (0)

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   Outputs
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   beta            (1,1)     Azimuth angle to fly at (rad)
   psi             (1,2)     Heading angle to fly at (rad). Note that
                             there are two possible headings, towards the 
                             East (+) or towards the West (-).

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