New Release (r9.1-SWIG)

• Name this release after porting on the new generation of SWIG wrapper - 2.X (tested with 2.0.3 - 2.0.6)
• Porting on the latest OpenCFD version of OpenFoam - 2.1.1
• The following new solvers were implemented in Python :
  • compressible/rhoPorousMRFLTSPimpleFlux
  • compressible/rhoPorousMRFSimpleFlux
  • compressible/rhoSimplecFlux
  • heatTransfer/buoyantBoussinesqPimpleFlux
  • heatTransfer/chtMultiRegionSimpleFlux
  • incompressible/adjointShapeOptimizationFlux
  • incompressible/MRFSimpleFlux
  • incompressible/SRFPimpleFlux
  • incompressible/SRFSimpleFlux