udevil: ignore and dont mount/handle special partitions

Signed-off-by: Stephan Raue <stephan@openelec.tv>
udevil: dont fail if mount is not possible, because its already mounted

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