STYLE: use new argList argRead() method and operator[] for cleaner code.

- deprecate argList::additionalArgs() method and remove uses of it

applications/utilities/mesh/conversion/foamMeshToFluent/fluentFvMesh.C

@@ -199,7 +199,8 @@ void Foam::fluentFvMesh::writeFluentMesh() const
             fluentMeshFile << l.size() << " ";
 
             // Note: In Fluent, all boundary faces point inwards, which is
-            // opposite from the FOAM convention. Turn them round on printout
+            // opposite from the OpenFOAM convention.
+            // Turn them around on printout
             forAllReverse (l, lI)
             {
                 fluentMeshFile << l[lI] + 1 << " ";

applications/utilities/mesh/conversion/foamMeshToFluent/foamMeshToFluent.C

@@ -23,7 +23,7 @@ License
     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 
 Description
-    Writes out the FOAM mesh in Fluent mesh format.
+    Writes out the OpenFOAM mesh in Fluent mesh format.
 
 \*---------------------------------------------------------------------------*/