src/OpenFOAM: Rationalised use of enumerations by using the C++11 scoped form

for

    db/functionObjects/timeControl/timeControl.H: timeControls
    primitives/bools/Switch/Switch.H: class switchType
    primitives/strings/fileName/fileName.H: fileType
    primitives/strings/wordRe/wordRe.H: compOption

applications/utilities/preProcessing/mapFields/mapLagrangian.C

@@ -105,7 +105,7 @@ void mapLagrangian(const meshToMesh0& meshToMesh0Interp)
         readDir
         (
             meshSource.time().timePath()/cloud::prefix,
-            fileName::DIRECTORY
+            fileType::directory
         )
     );