Support the vendor annotations in translateModel and simulation runtime

[Adrian Pop]

We should add support for vendor annotations in translateModel:

Flags fX has the form -name or -name=value.

Annotation in the model:

__OpenModelica_simulationFlags=(f1 f2 f3 f4)

Flags in translateModel

// override f2 from __OpenModelica_simulationFlags
translateModel(M, simflags="f2 f5 f6");

Flags on command line:

# override f3 from __OpenModelica_simulationFlags
# override f6 from translateModel
./M -f3 f6 f7

The flags from translateModel should override {{OpenModelica_simulationFlags}}} and should be put in the M_init.xml file each flag in its own element under <DefaultExperiment>.

Example M_init.xml file:

<DefaultExperiment stopTime="0" endTime="1">
  <SimFlag>f1</SimFlag>
  <SimFlag>f2</SimFlag>
  <SimFlag>f3</SimFlag>
  <SimFlag>f4</SimFlag>
  <SimFlag>f5</SimFlag>
  <SimFlag>f6</SimFlag>
</DefaultExperiment>

The simulation runtime (M.exe) will read the simulation flags from M_init.xml and apply them before applying the flags given on the command line.

See also ticket: #3488