[factory] Adapt to function.hh deprecation

dune/foamgrid/foamgrid/foamgridelements.hh

@@ -6,6 +6,8 @@
 #include <memory>
 
 #include <dune/common/fmatrix.hh>
+
+#define DUNE_FUNCTION_HH_SILENCE_DEPRECATION
 #include <dune/common/function.hh>
 
 #include <dune/foamgrid/foamgrid/foamgridvertex.hh>
@@ -181,6 +183,7 @@ namespace Dune {
         bool isNew_;
 
         /** \brief The element parametrization */
+        // TODO after deprecation period (release 2.8) change this to std::function
         std::shared_ptr<VirtualFunction<FieldVector<ctype, dimgrid>, FieldVector<ctype, dimworld> > > elementParametrization_;
 
         /** \brief This flag is set by postGrow() if the element looses its right to coarsen
@@ -366,6 +369,7 @@ namespace Dune {
         FoamGridEntityImp<dimgrid, dimgrid ,dimworld, ctype>* father_;
 
         /** \brief The element parametrization */
+        // TODO after deprecation period (release 2.8) change this to std::function
         std::shared_ptr<VirtualFunction<FieldVector<ctype, dimgrid>, FieldVector<ctype, dimworld> > > elementParametrization_;
 
         /** \brief This flag is set by postGrow() if the element looses its right to coarsen