update kpatch to 0.1.8

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
update libvirt to 1.2.6

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
fix libguestfs

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>
cleanup old patches from linux-kernel

Signed-off-by: Vasiliy Tolstov <v.tolstov@selfip.ru>