message: Rename "output" to test in prolongation restriction.
diff: @@ -698,14 +698,17 @@ public:
  /// Get the input finite element space prolongation matrix
  virtual const Operator *GetProlongation() const
  { return trial_fes->GetProlongationMatrix(); }
  +
  /// Get the input finite element space restriction matrix
  virtual const Operator *GetRestriction() const
  { return trial_fes->GetRestrictionMatrix(); }
  - /// Get the output finite element space prolongation matrix
  - virtual const Operator *GetOutputProlongation() const
  +
  + /// Get the test finite element space prolongation matrix
  + virtual const Operator *GetTestProlongation() const
  { return test_fes->GetProlongationMatrix(); }
  - /// Get the output finite element space restriction matrix
  - virtual const Operator *GetOutputRestriction() const
  +
  + /// Get the test finite element space restriction matrix
  + virtual const Operator *GetTestRestriction() const
  { return test_fes->GetRestrictionMatrix(); }
  /** For partially conforming trial and/or test FE spaces, complete the
  