Hostnamed changes:
- add support for Chassis, Deployment & Location properties
- guess chassis property
- add detection for more smbios types
- fix polkit action for SetPrettyHostname
General fixes/changes:
- fix missing newline on new shell entries
- make /etc/localtime a symlink if it doesn't exist yet or already is a symlink
- ensure 0664 permissions on /etc/{localtime,timezone}
- port to GTask
- optionally build without openrc