Get rid of GeneralProduct for outer-products, and get rid of ScaledProduct

Eigen/src/Core/ProductBase.h

@@ -174,6 +174,7 @@ class ProductBase : public MatrixBase<Derived>
     mutable PlainObject m_result;
 };
 
+#ifndef EIGEN_TEST_EVALUATORS
 // here we need to overload the nested rule for products
 // such that the nested type is a const reference to a plain matrix
 namespace internal {
@@ -263,6 +264,8 @@ class ScaledProduct
     Scalar m_alpha;
 };
 
+#endif // EIGEN_TEST_EVALUATORS
+
 /** \internal
   * Overloaded to perform an efficient C = (A*B).lazy() */
 template<typename Derived>