ENH: checkMesh: have -writeSets option

- checkMesh has option to write faceSets or (outside of) cellSets as
sampledSurface format. It automatically reconstructs the set on the master
and writes it to the postProcessing folder (as any sampledSurface). E.g.

    mpirun -np 6 checkMesh -allTopology -allGeometry -writeSets vtk -parallel

- fixed order writing of symmTensor in Ensight writers

applications/utilities/postProcessing/dataConversion/foamToEnsight/ensightCloudField.C

@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -28,6 +28,7 @@ License
 #include "IOField.H"
 #include "OFstream.H"
 #include "IOmanip.H"
+#include "ensightPTraits.H"
 
 using namespace Foam;
 
@@ -105,8 +106,10 @@ void ensightCloudField
                 v = pTraits<Type>::zero;
             }
 
-            for (direction cmpt=0; cmpt<pTraits<Type>::nComponents; cmpt++)
+            for (direction i=0; i < pTraits<Type>::nComponents; ++i)
             {
+                label cmpt = ensightPTraits<Type>::componentOrder[i];
+
                 ensightFile << setw(12) << component(v, cmpt);
                 if (++count % 6 == 0)
                 {