smbcontrol ping command

[Herb Lewis]

with Samba-3.2.0 if you run

     smbcontrol smbd ping

you get responses from not only smbd but winbindd and nmbd as well.
Not sure when this broke.

If you use winbindd or nmbd instead of smbd you only get a pong
from the appropriate daemon.

I won't have time until Friday to look at this so if someone else
has nothing to do ... :-)