From: Sudhir Kumar <skumar@linux.vnet.ibm.com>

From: Sudhir Kumar <skumar@linux.vnet.ibm.com>

libcgroup: testcases for cgroup_modify_cgroup()

This patch adds testcases for libcgroup API cgroup_modify_cgroup() testing. The API
is called with filesystem mounted (FS_MOUNTED=1) and return values are checked.
The API is first called with the same cgroup(the one which is existing in the
file system, and with all the same parameters). The second time it is called
with a null cgroup. Third time it is called with a new cgroup having different
controller.
The filesystem is checked if the values have been modified.

Signed-off-by: Sudhir Kumar <skumar@linux.vnet.ibm.com>
Signed-off-by: Dhaval Giani <dhaval@linux.vnet.ibm.com>
git-svn-id: https://libcg.svn.sourceforge.net/svnroot/libcg/trunk@94 4f4bb910-9a46-0410-90c8-c897d4f1cd53