Function rename

Like std.file.rename, but supports Path, command echoing and dryrun.

void rename (
  const(Path) from,
  const(Path) to
);

void rename (
  const(string) from,
  const(Path) to
);

void rename (
  const(Path) from,
  const(string) to
);

void rename (
  const(string) from,
  const(string) to
);