-suppression of Triangulation_face_2 and Triangulation_vertex_2 classes
the TDS and Triangulation now have the same faces and vertices
defined in TDS class
as well as Face_handle and Vertex_handle
-supression of Triangulation_default_data_structure_2
and Triangulation_data_structure_using_list_2. There is now only
one Triangulation_data_structure_2 (which for the moment is still
using list).
Triangulation_face_base_2
add two functions ccw_permute() and cw_permute to Triangulation_face_base_2
Modify tds functions insert_dim_up() and remove_dim_down()
accordingly
typedef included in derived triangulation for the requirement of
MIPSPRO 7.3
output and input poperators suppressed for delaunay and constrained triangulation : after all, inheritance works well
dimension() retrieved from Triangulation_ds_face_2
and included in Triangulation_face_base_2
compiles and runs (at least with gcc 2.95)
the additionnal typedef in derived classes causes compiler internal error
with egcs (at lest with the function insert* returning a vertex_handle,
when defined outside the class