message: Added MultTranspose to IdentityOperator.
diff: @@ -296,6 +296,9 @@ public:
  /// Operator application
  virtual void Mult(const Vector &x, Vector &y) const { y = x; }
  +
  + /// Application of the transpose
  + virtual void MultTranspose(const Vector &x, Vector &y) const { y = x; }
  };
  