Merge branch 'js/prep-symlink-windows'

Further preparation to upstream symbolic link support on Windows. * js/prep-symlink-windows: trim_last_path_component(): avoid hard-coding the directory separator strbuf_readlink(): support link targets that exceed 2*PATH_MAX strbuf_readlink(): avoid calling `readlink()` twice in corner-cases init: do parse _all_ core.* settings early mingw: do resolve symlinks in `getcwd()`