updated Makefile to use -O1 in CXXFLAGS instead of -O3; -O2 and above currently break the app

git-svn-id: svn://anubis/fart/trunk@61 7f9b0f55-74a9-4bce-be96-3c2cd072584d

shapes/Sphere.cc

@@ -38,9 +38,8 @@ Shape::IntersectList Sphere::intersect(const Ray & ray)
 
 Vector Sphere::getNormalAt(const Vector & pt)
 {
-    Vector pt_inv = m_inverse.transform_point(pt);
+    Vector normal = m_inverse.transform_point(pt);
 
-    Vector normal = pt_inv;
     normal.normalize();
 
     return m_transform.transform_normal(normal);