sampledPlane: Correct handling of coordinate system specification

Patches provided by Timm Severin
Resolves bug-report http://www.openfoam.org/mantisbt/view.php?id=1764

applications/utilities/postProcessing/sampling/sample/sampleDict

@@ -175,10 +175,20 @@ surfaces
     interpolatedPlane
     {
         type            plane;    // always triangulated
-        // make plane relative to the coordinateSystem (Cartesian)
+
+        // Make plane relative to the coordinateSystem (Cartesian)
         coordinateSystem
         {
             origin      (0.0501 0.0501 0.005);
+
+            // Add a coordinate rotation
+            // (required, so here one that doesn't change anything)
+            coordinateRotation
+            {
+                type    axesRotation;
+                e1      (1 0 0);
+                e2      (0 1 0);
+            }
         }
         basePoint       (0 0 0);
         normalVector    (0.1 0.1 1);

src/sampling/sampledSurface/sampledPlane/sampledPlane.C

@@ -80,7 +80,7 @@ Foam::sampledPlane::sampledPlane
     // allow lookup from global coordinate systems
     if (dict.found("coordinateSystem"))
     {
-        coordinateSystem cs(mesh, dict);
+        coordinateSystem cs(mesh, dict.subDict("coordinateSystem"));
 
         point  base = cs.globalPosition(planeDesc().refPoint());
         vector norm = cs.globalVector(planeDesc().normal());