xbmc: convert to new package format

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

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc (Gotham): update to xbmc-f68634b

Signed-off-by: Stephan Raue <stephan@openelec.tv>
Merge branch 'master' of github.com:OpenELEC/OpenELEC.tv
scripts/build: cosmetics

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