Merge branch 'mw/symlinks' into maint

* mw/symlinks: setup: fix windows path buffer over-stepping setup: don't dereference in-tree symlinks for absolute paths setup: add abspath_part_inside_repo() function t0060: add tests for prefix_path when path begins with work tree t0060: add test for prefix_path when path == work tree t0060: add test for prefix_path on symlinks via absolute paths t3004: add test for ls-files on symlinks via absolute paths