Fix dox for namespaces

Eigen/src/Jacobi/Jacobi.h

diff --git a/Eigen/src/Jacobi/Jacobi.h b/Eigen/src/Jacobi/Jacobi.h
index 956f72d..da9fb53 100644
--- a/Eigen/src/Jacobi/Jacobi.h
+++ b/Eigen/src/Jacobi/Jacobi.h
@@ -255,13 +255,13 @@
 *   Implementation of MatrixBase methods
 ****************************************************************************************/
 
+namespace internal {
 /** \jacobi_module
   * Applies the clock wise 2D rotation \a j to the set of 2D vectors of cordinates \a x and \a y:
   * \f$ \left ( \begin{array}{cc} x \\ y \end{array} \right )  =  J \left ( \begin{array}{cc} x \\ y \end{array} \right ) \f$
   *
   * \sa MatrixBase::applyOnTheLeft(), MatrixBase::applyOnTheRight()
   */
-namespace internal {
 template<typename VectorX, typename VectorY, typename OtherScalar>
 void apply_rotation_in_the_plane(VectorX& _x, VectorY& _y, const JacobiRotation<OtherScalar>& j);
 }

unsupported/Eigen/src/IterativeSolvers/Scaling.h

diff --git a/unsupported/Eigen/src/IterativeSolvers/Scaling.h b/unsupported/Eigen/src/IterativeSolvers/Scaling.h
index 4fd4392..9189fdd 100644
--- a/unsupported/Eigen/src/IterativeSolvers/Scaling.h
+++ b/unsupported/Eigen/src/IterativeSolvers/Scaling.h
@@ -9,6 +9,10 @@
 
 #ifndef EIGEN_ITERSCALING_H
 #define EIGEN_ITERSCALING_H
+
+namespace Eigen {
+using std::abs;
+
 /**
   * \ingroup IterativeSolvers_Module
   * \brief iterative scaling algorithm to equilibrate rows and column norms in matrices
@@ -41,8 +45,6 @@
   * 
   * \sa \ref IncompleteLUT 
   */
-namespace Eigen {
-using std::abs; 
 template<typename _MatrixType>
 class IterScaling
 {