Merge pull request #16686 from tamiko/relicensing-preliminaries-3

Relicensing: update copyright header to intermediate format

diff --cc examples/step-64/step-64.cc
Simple merge

diff --cc include/deal.II/arborx/distributed_tree.h
Simple merge

diff --cc include/deal.II/grid/grid_tools.h
Simple merge

diff --cc include/deal.II/lac/trilinos_tpetra_sparsity_pattern.h
Simple merge

diff --cc include/deal.II/lac/trilinos_tpetra_vector.h
Simple merge

diff --cc include/deal.II/lac/trilinos_tpetra_vector.templates.h
Simple merge

diff --cc include/deal.II/lac/vector.h
Simple merge

diff --cc include/deal.II/lac/vector.templates.h
Simple merge

diff --cc include/deal.II/particles/particle_handler.h
Simple merge

diff --cc source/lac/sparse_matrix.inst.in
Simple merge

diff --cc source/lac/trilinos_tpetra_vector.cc
Simple merge

diff --cc source/lac/vector.cc
Simple merge

diff --cc source/particles/particle_handler.cc
Simple merge