lkl: d747073 -> 2017-03-24

- Moves to a more recent kernel (4.10, I think ...)
- API break re the previous version
- cptofs: fix root directory copy
- add support for disks with custom ops
- add LKL_HIJACK_NET_QDISC to configure qdisc policy
- add LKL_HIJACK_SYSCTL to configure sysctl values