BUG: meshes with differing pointsInstance and facesInstance were not decomposed correctly.

In case of differing pointsInstance and facesInstance it will
- read the points belonging to the facesInstance
- construct and write the mesh belonging to the facesInstance
  (so with the old, facesInstance, points)
- additionally write the current points to pointsInstance

applications/utilities/parallelProcessing/decomposePar/domainDecomposition.H

@@ -55,6 +55,9 @@ class domainDecomposition
 {
     // Private data
 
+        //- Optional: points at the facesInstance
+        autoPtr<pointIOField> facesInstancePointsPtr_;
+
         //- Mesh decomposition control dictionary
         IOdictionary decompositionDict_;