TODO list:
==========

- conversion usernames to lowercase (if any such user is added in a package)
  (mail all of them about change)
- if i18n resources are in separate packages - install also i18n resources
  appropriate to the system while upgrading
- convert firewall-init configuration from ipchains to iptables. Maybe make
  modprobe ipchains
  and keep going? But it seems that additional masq modules are not avaible
  in this case
- ask if to proceed when starting
