Merge branch 'mj/pull-rebase-autostash'

"git pull --rebase" learned "--[no-]autostash" option, so that the rebase.autostash configuration variable set to true can be overridden from the command line. * mj/pull-rebase-autostash: t5520: test --[no-]autostash with pull.rebase=true t5520: reduce commom lines of code t5520: factor out common "failing autostash" code t5520: factor out common "successful autostash" code t5520: use better test to check stderr output t5520: ensure consistent test conditions t5520: use consistent capitalization in test titles pull --rebase: add --[no-]autostash flag git-pull.c: introduce git_pull_config()