default arg to tds constructor

Triangulation/TODO

@@ -7,7 +7,7 @@ example delaunay  does not execute properly
 
 in Triangulation_data_structure :
 put a default value for dim in the constructor
-(does not work, I do not understand why).
+(does not work, I do not understand why).             OK done.
 
 check that the perturbation scheme is independant of the order of insertion
 

Triangulation/examples/Triangulation/triangulation_data_structure_static.cpp

@@ -6,7 +6,7 @@ int main()
 {
   typedef CGAL::Triangulation_data_structure<CGAL::Dimension_tag<7> > TDS;
 
-  TDS S(0); // the argument is not taken into account. dimension is 7.
+  TDS S;
   assert( 7 == S.ambient_dimension() );
   assert( -2 == S.current_dimension() );
   assert( S.is_valid() );

Triangulation/include/CGAL/Triangulation_data_structure.h

@@ -147,7 +147,7 @@ private:
     };
 
 public:
-    Triangulation_data_structure( int dim)  /* Concept */
+    Triangulation_data_structure( int dim=0)  /* Concept */
         : dmax_(get_ambient_dimension<Dimen>::value(dim)), dcur_(-2), 
           vertices_(), full_cells_()
     {