[PATCH] su: support denying accounts with blank password

[Laurent Bercot]

On 09/06/2015 16:57, Isaac Dunham wrote:
> Or is blanking the root password completely wrong?

  I wouldn't say it's wrong, but it can be easily avoided.
You can always use a trivial password such as "root" or "admin"
for an initial machine setup.

-- 
  Laurent