Use pigz if available

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Blacklist the sound driver

HDMI audio may spew kernel warnings so better to black list

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Install glibc-locale and delete some files in config.sh

Otherwise you'll get ugly errors at login on Linux console.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Fetch kernel package from OBS Kernel:stable repo

This allows NII to run with the latest stable kernel, e.g. add the
support for Haswell.

Signed-off-by: Takashi Iwai <tiwai@suse.de>