ENH: Refactored the dummyFvMesh code

...ations/solvers/combustion/chemFoam/createSingleCellMesh.H

src/OpenFOAM/include/createMesh.H

src/finiteVolume/Make/files

src/finiteVolume/cfdTools/general/include/fvCFD.H

src/finiteVolume/fvMesh/proxyFvMesh/columnFvMesh.C

src/finiteVolume/fvMesh/proxyFvMesh/columnFvMesh.H

src/finiteVolume/fvMesh/proxyFvMesh/hexCellFvMesh.C

src/finiteVolume/fvMesh/proxyFvMesh/hexCellFvMesh.H

src/finiteVolume/fvMesh/proxyFvMesh/proxyFvMesh.C

src/finiteVolume/fvMesh/proxyFvMesh/proxyFvMesh.H

src/finiteVolume/fvMesh/proxyFvMesh/proxyFvMeshTemplates.C