Adapt the ports to be connected with data references
In the new runtime, the data ports and the data references are not managed the same way. So now, the ports can't be connected to a data reference, which is not the expected behavior. We need to accept connections with data references, in input and output.
This implies to change the C code of the runtime, and also the ATL transformation to generate data references in place of data port where it should be. We need also to get these data references to register them in the port, which will be different than other ports.