message: Making ParFiniteElementSpace::GetParMesh a const method to match the serial variant
diff: @@ -240,7 +240,7 @@ public:
  int GetNRanks() const { return NRanks; }
  int GetMyRank() const { return MyRank; }
  - inline ParMesh *GetParMesh() { return pmesh; }
  + inline ParMesh *GetParMesh() const { return pmesh; }
  int GetDofSign(int i)
  { return NURBSext || Nonconforming() ? 1 : ldof_sign[VDofToDof(i)]; }
  