ENH: for-range, forAllIters() ... in conversion/

src/conversion/common/reader/meshReader.C

src/conversion/common/reader/meshReaderAux.C

src/conversion/common/tables/boundaryRegion.C

src/conversion/common/tables/cellTable.C

src/fileFormats/sampledSetWriters/csv/csvSetWriter.C

src/fileFormats/sampledSetWriters/gnuplot/gnuplotSetWriter.C

src/fileFormats/sampledSetWriters/nastran/nastranSetWriter.C

src/fileFormats/sampledSetWriters/vtk/vtkSetWriter.C

src/fileFormats/vtk/part/foamVtuSizingTemplates.C

src/fileFormats/vtk/read/vtkUnstructuredReader.C