[CRIU] restore: restore cgroup directories and ttys as necessary

[Tycho Andersen]

Hi all,

There was some recent ML activity about restoring cgroup directories. This
patchset restores those cgroup dirs as well as some directories necessary for
restoring TTYs when restoring containers.

cgroup.c       |  6 +++++-
files-reg.c    |  4 ++++
include/util.h |  5 +++++
util.c         | 26 ++++++++++++++++++++++++++
4 files changed, 40 insertions(+), 1 deletion(-)

Tycho