[release] Removes spurious const qualification from function return types.

dune/istl/paamg/graph.hh

@@ -671,7 +671,7 @@ namespace Dune
        * @param target The target vertex of the edge we search for.
        * @return The edge we found or numeric_limits<EdgeIterator>::max() if it does not exist.
        */
-      const EdgeDescriptor findEdge(const VertexDescriptor& source,
+      EdgeDescriptor findEdge(const VertexDescriptor& source,
                                     const VertexDescriptor& target) const;
       /**
        * @brief Constructor.
@@ -1959,7 +1959,7 @@ namespace Dune
     }
 
     template<class G, class T>
-    inline const typename SubGraph<G,T>::EdgeDescriptor SubGraph<G,T>::findEdge(const VertexDescriptor& source,
+    inline typename SubGraph<G,T>::EdgeDescriptor SubGraph<G,T>::findEdge(const VertexDescriptor& source,
                                                                                 const VertexDescriptor& target) const
     {
       const EdgeDescriptor edge = std::lower_bound(edges_+start_[source], edges_+end_[source], target);

dune/istl/paamg/pinfo.hh

@@ -33,7 +33,7 @@ namespace Dune
         category = SolverCategory::sequential
       };
 
-      const SolverCategory::Category getSolverCategory () const {
+      SolverCategory::Category getSolverCategory () const {
         return SolverCategory::sequential;
       }
 

dune/istl/paamg/test/graphtest.cc

@@ -498,7 +498,7 @@ void testGraph ()
 }
 
 
-void testAggregate()
+void testAggregate(double eps)
 {
 
   typedef Dune::FieldMatrix<double,1,1> ScalarDouble;