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>