[SIMPLEXplus promotion]

This modification removes the old way to define simplexes (already deprecated and unsupported).
In the following SIMPLEX = [vertex|edge|face|tetrahedron]

All the stuff that was in vcg/simplex/SIMPLEXplus/ has now been promoted to vcg/simplex/

Details:
- the folder vcg/simplex/SIMPLEX/with has been removed
- the file vcg/simplex/SIMPLEX/base.h has been renamed into  vcg/simplex/SIMPLEX/base_old.h 
- the content of vcg/simplex/SIMPLEXplus/ has been moved into vcg/simplex/SIMPLEX/
- the folder vcg/simplex/SIMPLEXplus/ has been removed

Actions the update the  code using vcglib:
replace <vcg/simplex/SIMPLEXplus/*> with  <vcg/simplex/SIMPLEX/*> in every include
for MESHLAB users: already done along with this commit

vcg/complex/trimesh/autoalign_4pcs.h

@@ -41,8 +41,8 @@ used in the paper pseudocode.
 #include <vcg/complex/trimesh/closest.h>
 #include <vcg/complex/trimesh/update/bounding.h>
 
-#include <vcg/simplex/vertexplus/base.h>
-#include <vcg/simplex/faceplus/base.h>
+#include <vcg/simplex/vertex/base.h>
+#include <vcg/simplex/face/base.h>
 #include <vcg/complex/trimesh/base.h>
 #include <vcg/complex/trimesh/stat.h>
 #include <wrap/io_trimesh/export_ply.h>

vcg/complex/trimesh/base.h

@@ -141,7 +141,7 @@ Initial commit
 #include <vcg/math/shot.h>
 
 #include <vcg/container/simple_temporary_data.h>
-#include <vcg/simplex/edgeplus/base.h>
+#include <vcg/simplex/edge/base.h>
 /*
 People should subclass his vertex class from these one...
 */

vcg/complex/trimesh/update/curvature.h

@@ -36,7 +36,7 @@ Revision 1.5  2008/03/25 11:00:56  ganovelli
 fixed  bugs sign of principal direction and mean curvature value
 
 Revision 1.4  2008/03/17 11:29:59  ganovelli
-taubin and desbrun estimates added (-> see vcg/simplex/vertexplus/component.h [component_ocf.h|component_occ.h ]
+taubin and desbrun estimates added (-> see vcg/simplex/vertex/component.h [component_ocf.h|component_occ.h ]
 
 Revision 1.3  2006/02/27 18:02:57  ponchio
 Area -> doublearea/2