update check: check update url
postquota: remove logq
postquota: added logging
postquota: added ldap port configuration
postquota: remove mail module
postquota: added getopt parsing
           added options debug, help, quiet, version
postquota: add option foreground and daemon capability
postquota: renamed as postquotad (daemonize by default)
postquotad: more config
postquotad: added impersonation
postquotad: should setegid before seteuid
postquotad: add option to activate ldap query