add a new test data "fin90_with_PCA_normals.xyz"

Point_set_processing_3/examples/Point_set_processing_3/data/fin90_with_PCA_normals.xyz

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+0.711924 0.354099 0.373976 0.796477 0.013379 -0.604521 
+0.762479 0.410283 0.407832 0.770081 0.015107 -0.637767 
+0.741320 0.445790 0.395435 0.726835 -0.032852 -0.686026 
+0.736609 0.461604 0.380877 0.743571 -0.046717 -0.667023 
+0.723237 0.508706 0.376936 0.730734 -0.063037 -0.679746 
+0.755873 0.573250 0.423772 0.764775 -0.004064 -0.644285 
+0.760233 0.613316 0.372791 0.768149 -0.032056 -0.639468 
+0.753810 0.637080 0.390621 0.768149 -0.032056 -0.639468 
+0.743655 0.665991 0.399483 0.766755 -0.032733 -0.641105 
+0.718026 0.705785 0.391556 0.781704 -0.045804 -0.621966 

Point_set_processing_3/examples/Point_set_processing_3/denoise_point_set_example.cpp

@@ -24,7 +24,7 @@ int main(void)
 {
     // Reads a .xyz point set file in points[].
     std::list<PointVectorPair> points;
-    std::ifstream stream("data/sphere_20k_normal.xyz");
+    std::ifstream stream("data/fin90_with_PCA_normals.xyz");
     //std::ifstream stream("data/oni.xyz");
     if (!stream ||
         !CGAL::read_xyz_points_and_normals(stream,
@@ -38,10 +38,10 @@ int main(void)
     }
 
     // 
-    int k = 100;  //neighborhood size
+    int k = 10;  //neighborhood size
-    double sharpness_sigma = 60; // control sharpness(0-90), 
+    double sharpness_sigma = 15; // control sharpness(0-90), 
                                  // the bigger, the smoother.
-    int iter_number = 5; 
+    int iter_number = 3; 
 
     CGAL::Timer task_timer;
     task_timer.start();
@@ -71,7 +71,7 @@ int main(void)
     //// Note: write_xyz_points_and_normals() requires an output iterator
     //// over points as well as property maps to access each
     //// point position and normal.
-    std::ofstream out("data/sphere_20k_denoised.xyz");  
+    std::ofstream out("data/fin90_with_PCA_normals_denoised.xyz");  
     if (!out ||
       !CGAL::write_xyz_points_and_normals(
       out, points.begin(), points.end(),