- repack: add rule for ICAClient

- glibc-restore.sh: don't touch glibc package
- is_active_systemd: base on static info about systemd running
- epm-release_upgrade: run __check_system (assure we still have systemd) after upgrade
- add tip about epm repo --help and improve epm repo --help
- epm-repofix: add hack to fix apt-repo urls, some improvements

- improve anydesk repack
- epm-print: add epm print info command
- serv: add test command (for nginx -t, cupsd -t and so on)
- epm-restore: fix epm restore command example

- epm-release_upgrade: use [alt] sign for Sisyphus
- epm-autoremove: supports for python2 and python3 separately
- epm-sh-install: don't check vendor if a package is unaccesible
- add prescription python2-remove
- repack: add lightworks.sh