Get rid of include directives inside namespace blocks (bug #339).

unsupported/Eigen/src/MatrixFunctions/MatrixFunction.h

@@ -29,6 +29,8 @@
 #include "MatrixFunctionAtomic.h"
 
 
+namespace Eigen { 
+
 /** \ingroup MatrixFunctions_Module
   * \brief Class for computing matrix functions.
   * \tparam  MatrixType  type of the argument of the matrix function,
@@ -598,4 +600,6 @@ const MatrixFunctionReturnValue<Derived> MatrixBase<Derived>::cosh() const
   return MatrixFunctionReturnValue<Derived>(derived(), StdStemFunctions<ComplexScalar>::cosh);
 }
 
+} // end namespace Eigen
+
 #endif // EIGEN_MATRIX_FUNCTION