Changed to EAPI 5
Move and qoute S
Install sourced/executed helper files to /usr/libexec
Cleanup pkg_postinst

- move elog messages into README.gentoo
- reorder ewarn messages
Rename initscript
Replace arno-iptables-firewall with "${PN}"
Remove unnecessary trailing slash
Remove empty lines
Move DEPEND variable forward to match ordering with ebuild template