nscd should start after nslcd if both are present

[Raubvogel]

If nslcd and nscd are both installed on a machine, that means we are doing ldap. Which means nslcd needs to first talk to ldap and then have nscd do its thing by querying nslcd. Therefore, we really want /etc/init.d/nscd to have something like:

# Should-Start: nslcd
# Should-Stop: nslcd

Reference (because I forget things): http://wiki.debian.org/LSBInitScripts/

[Raubvogel (raubvogel)]

I believe that
http://ubuntuforums.org/showthread.php?t=1335022
https://bugs.launchpad.net/ubuntu/+source/nss-pam-ldapd/+bug/806761

are related since they show a better way to do this.