xbmc: update to xbmc-13-60bd97b

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: add PR4642

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

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