Merge pull request #8783 from peterrum/parallel-computeverticeswithghostneighbors

Clean up compute_vertices_with_ghost_neighbors

diff --cc include/deal.II/distributed/fully_distributed_tria.h
Simple merge

diff --cc source/distributed/fully_distributed_tria.cc
Simple merge

diff --cc source/distributed/tria_base.cc
Simple merge

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