Array stream variables are not expanded by the NF

[Francesco Casella]

Please check ​ThermoPower.Test.GasComponents.TestGasValveOpPoint. When flattening with the NF, the following equation is obtained

  Valve2.gas.Xi = array(Valve2.inlet.Xi_outflow[$i1] for $i1 in 1:4);

which may explain the failure of the back-end later on. The old FE flattens this to

  Valve1.inlet.Xi_outflow[1] = Valve2.inlet.Xi_outflow[1];
  Valve1.inlet.Xi_outflow[2] = Valve2.inlet.Xi_outflow[2];
  Valve1.inlet.Xi_outflow[3] = Valve2.inlet.Xi_outflow[3];
  Valve1.inlet.Xi_outflow[4] = Valve2.inlet.Xi_outflow[4];

[Francesco Casella]

We may expand this under some flag, so that the current back-end can handle this, and then later on disable it, as we already did for some other cases.

[Per Östlund]

I tried letting the NF expand all the array constructors, but it made no difference whatsoever. The backend still gives the exact same error. So the issue seems to be something else.

[Per Östlund]

Fixed in b9e99f1.