New supports now do rafts at least to the extent the test cases run through.

New supports enabled, old supports will go away soon.

xs/xsp/Print.xsp

@@ -119,6 +119,7 @@ _constant()
     void bridge_over_infill();
     void _make_perimeters();
     void _infill();
+    void _generate_support_material();
 
     void adjust_layer_height_profile(coordf_t z, coordf_t layer_thickness_delta, coordf_t band_width, int action)
         %code%{ 

xs/xsp/SupportMaterial.xsp

@@ -1,26 +0,0 @@
-%module{Slic3r::XS};
-
-%{
-#include <xsinit.h>
-#include "libslic3r/SupportMaterial.hpp"
-%}
-
-%name{Slic3r::Print::SupportMaterial2} class PrintObjectSupportMaterial {
-    PrintObjectSupportMaterial(PrintObject *print_object);
-    ~PrintObjectSupportMaterial();
-
-    void generate(PrintObject *object)
-        %code{% THIS->generate(*object); %};
-};
-
-%package{Slic3r::Print::SupportMaterial};
-%{
-
-SV*
-MARGIN()
-    PROTOTYPE:
-    CODE:
-        RETVAL = newSVnv(SUPPORT_MATERIAL_MARGIN);
-    OUTPUT: RETVAL
-
-%}