ncurses: enable installing curses.h

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xf86-video-intel: downgrade to xf86-video-intel-2.99.911, this solves stuttering while playing movies and hangs and stuttering in the XBMC Gui, thanks to 'adb76' for testing

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-bootloader: update to bcm2835-bootloader-f2275b9

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-driver: update to bcm2835-driver-f2275b9

Signed-off-by: Stephan Raue <stephan@openelec.tv>
projects/RPi/patches/linux: update RPi support patch

Signed-off-by: Stephan Raue <stephan@openelec.tv>
alsa-utils: unmute Nvidia CK804 IEC958 devices

Signed-off-by: Stephan Raue <stephan@openelec.tv>
config/version: set version to 4.2.1

Signed-off-by: Stephan Raue <stephan@openelec.tv>
config/version: set version back to 'devel'

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Merge remote-tracking branch 'openelec/openelec-4.2' into openelec-4.2
up 4.2.1