new package: readd package 'ffmpeg', revert if switching to XBMC vanilla

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: update FM patches, revert if switching to XBMC vanilla

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: depends on ffmpeg again, revert if switching to XBMC vanilla

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: add crosscompile-mess-fix-patch, revert if switching to XBMC vanilla

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