Merge pull request #14777 from bangerth/comment-4

diff --cc include/deal.II/matrix_free/evaluation_kernels_hanging_nodes.h
Simple merge

diff --cc include/deal.II/matrix_free/shape_info.templates.h
Simple merge

diff --cc include/deal.II/numerics/vector_tools_boundary.templates.h
Simple merge

diff --cc source/base/quadrature_lib.cc
Simple merge

diff --cc source/dofs/dof_tools_constraints.cc
Simple merge

diff --cc source/grid/grid_generator.cc
Simple merge

diff --cc source/grid/grid_out.cc
Simple merge

diff --cc source/grid/tria.cc
Simple merge