Merge pull request #6850 from masterleinad/use_using

Replace typedef by using

diff --cc include/deal.II/base/patterns.h
Simple merge

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

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

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

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

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

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

diff --cc source/numerics/error_estimator_1d.cc
Simple merge