friendship relationships corrected

[[Imported from SVN: r1089]]

grid/uggrid/uggridentity.hh

@@ -26,11 +26,10 @@ namespace Dune {
         UGGridEntity,UGGridElement,UGGridLevelIterator,
         UGGridIntersectionIterator,UGGridHierarchicIterator>
   {
-    //friend class UGGrid < dim , dimworld >;
-    //friend class UGGridEntity < 0, dim, dimworld>;
-    //friend class UGGridLevelIterator < codim, dim, dimworld>;
-    friend class UGGridLevelIterator < dim, dim, dimworld, All_Partition>;
-    //friend class UGGridIntersectionIterator < dim, dimworld>;
+
+    template <int codim_, int dim_, int dimworld_, PartitionIteratorType PiType_>
+    friend class UGGridLevelIterator;
+
   public:
 
     //! level of this element

grid/uggrid/uggridleveliterator.hh

@@ -22,9 +22,8 @@ namespace Dune {
     public LevelIteratorDefault <codim,dim,dimworld, pitype, UGCtype,
         UGGridLevelIterator,UGGridEntity>
   {
-    //   friend class UGGridEntity<2,dim,dimworld>;
-    //   friend class UGGridEntity<1,dim,dimworld>;
-    //   friend class UGGridEntity<0,dim,dimworld>;
+    friend class UGGridEntity<codim,dim,dimworld>;
+    friend class UGGridEntity<0,dim,dimworld>;
 
     friend class UGGridLevelIteratorFactory<2,2,2,All_Partition>;
     friend class UGGridLevelIteratorFactory<0,2,2,All_Partition>;
@@ -55,7 +54,7 @@ namespace Dune {
     int level ();
 
   private:
-    // private Methods
+
     void makeIterator();
 
     void setToTarget(typename TargetType<codim,dim>::T* target) {