message: Fixes a bug in pumi.cpp mentioned in
  Assignment used instead of equality in else if condition
diff: @@ -138,7 +138,7 @@ static void rotateSimplex(int type,
  MFEM_ASSERT(r>=0 && r<6, "incorrect rotation");
  n = 3;
  }
  - else if (type = apf::Mesh::TET) // tets
  + else if (type == apf::Mesh::TET) // tets
  {
  MFEM_ASSERT(r>=0 && r<12, "incorrect rotation");
  n = 4;
  