libass: update to libass-0.12.0

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xorg-server: update to xorg-server-1.16.2

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xf86-video-nvidia: update to xf86-video-nvidia-340.58
pciutils: update to pciutils-3.3.0, enable udev and libkmod support, dont install pci.ids
systemd: install pci hwdb