[libvirt] [PATCH 0/2][RESEND] Fix problems on using lxc with cgroup ns subsystem

[Ryota Ozaki]

The patch set fixes two problems of lxc that happen when ns
subsystem is enabled with memory subsystem at the same time.
The fist problem is that cgroup subdirectories that are
automatically created by ns subsystem remain after domain
shutdown. The second problem is that memory usage is not
properly accounted.

Ryota Ozaki (2):
  cgroup: Change virCgroupRemove to remove all child groups at first
  cgroup: Enable memory.use_hierarchy of cgroup for domain