ENH: Updates to porosity solvers

...oam/rhoPorousMRFLTSPimpleFoam/rhoPorousMRFLTSPimpleFoam.C

...ssible/rhoPimpleFoam/rhoPorousMRFPimpleFoam/createZones.H

...impleFoam/rhoPorousMRFPimpleFoam/rhoPorousMRFPimpleFoam.C

...ssible/rhoSimpleFoam/rhoPorousMRFSimpleFoam/createZones.H

...vers/heatTransfer/chtMultiRegionFoam/chtMultiRegionFoam.C

...nFoam/chtMultiRegionSimpleFoam/chtMultiRegionSimpleFoam.C

...onFoam/chtMultiRegionSimpleFoam/fluid/createFluidFields.H

...oam/chtMultiRegionSimpleFoam/fluid/setRegionFluidFields.H

...heatTransfer/chtMultiRegionFoam/fluid/createFluidFields.H

...tTransfer/chtMultiRegionFoam/fluid/setRegionFluidFields.H

...gParcelFoam/LTSReactingParcelFoam/LTSReactingParcelFoam.C

...solvers/lagrangian/reactingParcelFoam/createPorousZones.H

applications/solvers/lagrangian/reactingParcelFoam/pEqn.H

...olvers/lagrangian/reactingParcelFoam/reactingParcelFoam.C

.../multiphase/interFoam/porousInterFoam/createPorousZones.H

...rs/multiphase/interFoam/porousInterFoam/porousInterFoam.C