Merge branch 'tl/ls-tree-code-clean-up'

Code clean-up. * tl/ls-tree-code-clean-up: t3104: remove shift code in 'test_ls_tree_format' ls-tree: cleanup the redundant SPACE ls-tree: make "line_termination" less generic ls-tree: fold "show_tree_data" into "cb" struct ls-tree: use a "struct options" ls-tree: don't use "show_tree_data" for "fast" callbacks