Major change here is moving kodi.service from system.slice into user.slice.
Several positive tangibles include:
* Ability to use USB drives directly in Kodi GUI.
* More simplistic use/configuration of pulseaudio for more advanced setups.
Another effect of this change is that calling `systemctl reboot` will not
result in a gracefully exit and some profile data will be lost since systemd
frankly, brutally kills user.slice cgs. In principal this is no different
than data loss occurring from a user doing work when a sysadmin issues a reboot
command without prior warning.
The newly included man page and post_upgrade message will inform users of this
and suggest several alternatives.
This commit also introduces a simplification to packaging by using a versioned
upstream source for init files instead of providing these six files on a per-
-package-basis.
Upstream dropped support for RPi platform since gbm matured and is stable[1].
This package should support RPi2+ hardware.
1. https://github.com/xbmc/xbmc/pull/16321
