Tests: handled legacy 'darwin' behavior in disable_symlinks tests. Unlike stated in the newer Open Group Base Specifications Issue 7, opening a symlink to the non-directory entry with a trailing slash would succeed in 'darwin'-like systems: [ENOTDIR] <..>the path argument contains at least one non- <slash> character and ends with one or more trailing <slash> characters, and the last pathname component names an existing file that is neither a directory nor a symbolic link to a directory<..> See for details how it was fixed in FreeBSD 7+: http://bugs.freebsd.org/21768