There is a problem in cgroup_init function

There is a problem in cgroup_init function
   Now if the function strtok_r get at first the controller which
precedes some other controllers on the mount-point option list,
then it removes all next controllers from the list and they are omitted.
   The test which is done by strtok_r is redundant (there is already
hasmntopt test), so the patch is removing it at all.

 E.G. use commands:

$ mount -t cgroup -o cpu,memory,net_cls lab1 /cgroup/lab1
$ mount -t cgroup -o remount,cpuset,cpu,memory,net_cls lab1 /cgroup/lab1
$ lssubsys -ma

Signed-off-by: Ivana Hutarova Varekova <varekova@redhat.com>
Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com>