Finish TreeDelta.show() refactoring.

* bzrlib/delta.py:
(TreeDelta): Fix doc string, that's seven lists we have here
including 'king_changed' which wasn't documented.
(TreeDelta.show.show_more_renamed,
TreeDelta.show.show_more_kind_changed, TreeDelta.show.show_path):
More helpers.
(TreeDelta.show): Add parameters to finish refactoring.
(TreeDelta.show.show_list): Break output some more to take all
cases into account.
(TreeDelta.show): Use show_list for renamed and kind_changed too.