SEntityBase constructor initialized geometry per default but set the

builtgeomery-flag to false... Don't initialize geo on construction
anymore. Should not break anything but speeded up the construction of
the IntersectionIterator notably

[[Imported from SVN: r970]]

grid/sgrid/sgrid.cc

@@ -231,7 +231,7 @@ namespace Dune {
   }
 
   template<int codim, int dim, int dimworld>
-  inline SEntityBase<codim,dim,dimworld>::SEntityBase (SGrid<dim,dimworld>& _grid, int _l, int _id) : geo(true)
+  inline SEntityBase<codim,dim,dimworld>::SEntityBase (SGrid<dim,dimworld>& _grid, int _l, int _id) : geo(false)
   {
     grid = &_grid;
     l = _l;
@@ -241,7 +241,7 @@ namespace Dune {
   }
 
   template<int codim, int dim, int dimworld>
-  inline SEntityBase<codim,dim,dimworld>::SEntityBase () : geo(true)
+  inline SEntityBase<codim,dim,dimworld>::SEntityBase () : geo(false)
   {
     builtgeometry = false;
   }