ENH: checkMesh : wedge & empty checking improved

- aspect ratio and cellDeterminant do not use 3rd direction
- wedges are properly check for having opposite one

applications/utilities/mesh/manipulation/checkMesh/checkGeometry.H

@@ -1,8 +1,21 @@
 #include "label.H"
+#include "HashSet.H"
+#include "labelVector.H"
 
 namespace Foam
 {
     class polyMesh;
+    class wedgePolyPatch;
+
+    label findOppositeWedge(const polyMesh&, const wedgePolyPatch&);
+
+    bool checkWedges
+    (
+        const polyMesh&,
+        const bool report,
+        const Vector<label>&,
+        labelHashSet*
+    );
 
     label checkGeometry(const polyMesh& mesh, const bool allGeometry);
 }