Windows XP doesn't support hardlinks but Vista+ does. The feature should be enabled on these systems.
Added hardlink/symlink support for Windows Vista+.
Handle OSError during symlink support check
Under a windows that supports symlinks (Vista+), we still need
proper privileges. If we don't have it, OSError is raised and we
need to correctly handle this case. Ref #220.
Updated help about symlinks and hardlinks
It now mentions that Windows is supported and under which
conditions it is. Ref #220.