Merge branch 'ma/branch-list-paginate'

"git branch --list" learned to show its output through the pager by default when the output is going to a terminal, which is controlled by the pager.branch configuration variable. This is similar to a recent change to "git tag --list". * ma/branch-list-paginate: branch: change default of `pager.branch` to "on" branch: respect `pager.branch` in list-mode only t7006: add tests for how git branch paginates