Merge branch 'ng/rebase-merges-branch-name-as-label'

"git rebase --rebase-merges" now uses branch names as labels when able. * ng/rebase-merges-branch-name-as-label: rebase-merges: try and use branch names as labels rebase-update-refs: extract load_branch_decorations load_branch_decorations: fix memory leak with non-static filters