Add a note about depreciation in the description of Polyhedron_IO

Polyhedron_IO/package_info/Polyhedron_IO/description.txt

@@ -1 +1,3 @@
 File IO for CGAL::Polyhedron_3.
+
+This package is fully deprecated in favor of I/O functions in the packages BGL, Polyhedron, and Stream_support.

Polyhedron_IO/package_info/Polyhedron_IO/long_description.txt

@@ -1,93 +0,0 @@
-Polyhedron_IO Package
----------------------------------------------------------------------
-File IO for CGAL_Polyhedron_3<Traits,HDS>.
-
-The documentation to this package can be found in the corresponding 
-input/output stream packages and some of the functions are mentioned 
-in the reference pages of the Polyhedron package.
-
-I hesitate at the moment to include the stream IO operators
-in CGAL_Polyhedron_3 by default, since this couples two non
-trivial packages rather tightly. I would like to see a discussion,
-how the stream support will be extended to the basic library.
-For example the generic halfedge data structure has so far no IO
-at all (and would be hard to provide it).
-
-
--  CGAL/IO/Polyhedron_iostream.h
-
-     Stream IO operators. Default format is OFF from GeomView.
-
--  CGAL/IO/Polyhedron_inventor_ostream.h
--  CGAL/IO/Polyhedron_VRML_1_ostream.h
--  CGAL/IO/Polyhedron_VRML_2_ostream.h
--  CGAL/IO/Polyhedron_geomview_ostream.h
-
-     Output stream operator for CGAL_Inventor_ostream, 
-     CGAL_VRML_1_ostream, CGAL_VRML_2_ostream and 
-     CGAL_Geomview_stream respectively.
-
-
--  CGAL/IO/print_OFF.h
--  CGAL/IO/print_inventor.h
--  CGAL/IO/print_VRML_1.h
--  CGAL/IO/print_VRML_2.h
--  CGAL/IO/print_wavefront.h
-
-     Global output functions for the different formats.
-
--  CGAL/IO/scan_OFF.h
--  CGAL/IO/Polyhedron_scan_OFF.h
-
-     A global scanner function and a modifier class for the
-     OFF format.
-
--  examples/Polyhedron_IO/iv2off.C
--  examples/Polyhedron_IO/off2iv.C
--  examples/Polyhedron_IO/off2off.C
--  examples/Polyhedron_IO/off2vrml.C
--  examples/Polyhedron_IO/off2wav.C
--  examples/Polyhedron_IO/polyhedron_copy.C
--  examples/Polyhedron_IO/off_bbox.C
--  examples/Polyhedron_IO/off_glue.C
--  examples/Polyhedron_IO/off_transform.C
-
-     Simple file converter and manipulations of OFF files.
-
--  examples/Polyhedron_IO/terr_trian.C
--  examples/Polyhedron_IO/triangulation_print_OFF.h
-
-     Example triangulating a terrain (3D point set given in an OFF file)
-     writing the terrain back to an OFF file.
-
--  demo/Polyhedron_IO/viewpoint2off.C
--  demo/Polyhedron_IO/geomview.C
-
-     A demo converter for Viewpoint mesh format and a demo output of
-     a polyhedron to Geomview.
-
--  CGAL/IO/generic_print_polyhedron.h
--  CGAL/IO/File_writer_OFF.h
--  CGAL/IO/Generic_writer.h
--  CGAL/IO/Writer_OFF.h
--  CGAL/IO/File_header_OFF.h
--  CGAL/IO/File_header_extended_OFF.h
--  CGAL/IO/File_scanner_OFF.h
--  CGAL/IO/Scanner_OFF.h
--  CGAL/IO/generic_copy_OFF.h
--  CGAL/IO/scan_points_OFF.h
--  CGAL/IO/File_writer_wavefront.h
--  CGAL/IO/File_writer_inventor.h
--  CGAL/IO/File_writer_VRML_2.0.h
--  CGAL/IO/binary_file_io.h
-
--  src/File_writer_OFF.C
--  src/File_header_OFF.C
--  src/File_scanner_OFF.C
--  src/File_writer_wavefront.C
--  src/File_writer_inventor.C
--  src/File_writer_VRML_2.C
-
-     Files needed to implement all the stuff.
-
-Lutz Kettner