STYLE: use Enum instead of NamedEnum in fileFormats

src/conversion/fire/FIREMeshWriter.C

src/fileFormats/coordSet/coordSet.C

src/fileFormats/coordSet/coordSet.H

src/fileFormats/fire/FIRECore.C

src/fileFormats/fire/FIRECore.H

src/fileFormats/starcd/STARCDCore.C

src/fileFormats/starcd/STARCDCore.H

src/fileFormats/vtk/read/vtkUnstructuredReader.C

src/fileFormats/vtk/read/vtkUnstructuredReader.H

src/surfMesh/surfaceFormats/fire/FLMAsurfaceFormat.C