Merge branch 'jn/setup-fixes'

* jn/setup-fixes: t1510: fix typo in the comment of a test Documentation updates for 'GIT_WORK_TREE without GIT_DIR' historical usecase Subject: setup: officially support --work-tree without --git-dir tests: compress the setup tests tests: cosmetic improvements to the repo-setup test t/README: hint about using $(pwd) rather than $PWD in tests Fix expected values of setup tests on Windows