Improved smoothing of mesh surface + cleanup of unncessary stuff

executables/cartesian2DMesh/cartesian2DMesh.C

executables/cartesianMesh/cartesianMesh.C

executables/hexMesh/hexMesh.C

executables/pMesh/pMesh.C

executables/tetMesh/tetMesh.C

...DMesh/cartesian2DMeshGenerator/cartesian2DMeshGenerator.C

...esianMesh/cartesianMeshGenerator/cartesianMeshGenerator.C

meshLibrary/dualMesh/dualMeshGenerator/dualMeshGenerator.C

.../dualMesh/dualUnfoldConcaveCells/dualUnfoldConcaveCells.C

...ibrary/hexMesh/hexMeshExtractor/hexMeshExtractorHexMesh.C

meshLibrary/hexMesh/hexMeshGenerator/hexMeshGenerator.C

meshLibrary/tetMesh/tetMeshGenerator/tetMeshGenerator.C

meshLibrary/utilities/boundaryLayers/extrudeLayer.C

...brary/utilities/dataConversion/foamToFPMA/writeMeshFPMA.C

...ry/utilities/decomposeCells/decomposeCellsDecomposition.C

...eshOctreeCreator/meshOctreeCreatorAdjustOctreeToSurface.C

...ee/meshOctreeCreator/meshOctreeCreatorCreateOctreeBoxes.C

...ctree/meshOctreeCreator/meshOctreeCreatorFrontalMarking.C

...ree/meshOctreeCreator/meshOctreeCreatorLoadDistribution.C

...hOctree/meshOctreeCube/meshOctreeCubeRecursiveFunctions.C