Rewrite AixLib.Utilities.HeatTransfer.HeatConv_outside with WindSpeed_internal
The WindSpeedPort is only used in some algorithms, but the port is not conditioned to this algorithms. This can lead to problems with unconnected ports, when some algorithms are preffered. The state-of-the-art for such implementation is with a protected RealOutput variable. I propose to do this directly in the master, as the project where I'm working on uses the master, and is actually a bug.