Rename _toPerl() to arrayref()

xs/xsp/ExPolygon.xsp

@@ -21,7 +21,7 @@ ExPolygon::new(...)
         RETVAL
 
 SV*
-ExPolygon::_toPerl()
+ExPolygon::arrayref()
     CODE:
         const unsigned int num_holes = THIS->holes.size();
         AV* av = newAV();

xs/xsp/Point.xsp

@@ -10,7 +10,7 @@
 %{
 
 SV*
-Point::_toPerl()
+Point::arrayref()
     CODE:
         RETVAL = point2perl(*THIS);
     OUTPUT: