Merge branch 'js/safe-directory-plus' into maint

Platform-specific code that determines if a directory is OK to use as a repository has been taught to report more details, especially on Windows. source: <pull.1286.v2.git.1659965270.gitgitgadget@gmail.com> * js/safe-directory-plus: mingw: handle a file owned by the Administrators group correctly mingw: be more informative when ownership check fails on FAT32 mingw: provide details about unsafe directories' ownership setup: prepare for more detailed "dubious ownership" messages setup: fix some formatting