xorg-server: rework systemd service files and helper scripts

Signed-off-by: Stephan Raue <stephan@openelec.tv>
udisks: rework systemd service files, remove unneeded service file

Signed-off-by: Stephan Raue <stephan@openelec.tv>
polkit: remove unneeded service file

Signed-off-by: Stephan Raue <stephan@openelec.tv>
ratpoison: rework systemd service file

Signed-off-by: Stephan Raue <stephan@openelec.tv>
installer: rework buildscript

Signed-off-by: Stephan Raue <stephan@openelec.tv>
installer: rework systemd service file

Signed-off-by: Stephan Raue <stephan@openelec.tv>
connman: rework systemd service files, connman-vpn will be started byself, set loopback device early, create default config on first startup if not exist

Signed-off-by: Stephan Raue <stephan@openelec.tv>
avahi: cleanup

Signed-off-by: Stephan Raue <stephan@openelec.tv>
openssh: cleanup systemd service files

Signed-off-by: Stephan Raue <stephan@openelec.tv>
samba: rework systemd service files

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: fix systemd service file

Signed-off-by: Stephan Raue <stephan@openelec.tv>
iana-etc: fix /etc/services file for rpcbind

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: fix xbmc-waitonnetwork.service file

Signed-off-by: Stephan Raue <stephan@openelec.tv>