Separate setting atime and mtime for symlinks

[Fran314]

Right now the only available function that allows you to set any type of time on a symlink is set_symlink_file_times which forces you to set both the atime and the mtime.

It would be useful to have, say, either two separate set_symlink_file_atime and set_symlink_file_mtime or making so that (like set_file_handle_times) the function set_symlink_file_times takes two Options for the atime and the mtime allowing you to set either one of those.

Is this something that is possible to add?

[ericzolf]

Actually, I expected set_file_atime and set_file_mtime to do exactly this, but they simply ignored the symlink, so I second the request.