ENHANCEMENT: ONLIGHT CHANGES

 * Add a "-i userid" option
 * Fix 32 vs. 64 bit operations and some typos.
 * Added STRUCTURAL to dnszone, dnsrrset and dnsloccodes.
 * Remove the "SUP dnszone" from the "dnsrrset" objectclass.
 * Added the dnslocation attribute to the dnsrrset object class.
 * Make sure the update interval is set in the case of invokation as "ldap2dnsd"
   when using foreground daemon mode.
 * Add return-value checking for the nice() and the system() calls.  This should
   eliminate all compilation warnings.
 * Add Debian packaging.