libcgroup Test: make-controller-use-generic-in-binary

libcgroup Test: make-controller-use-generic-in-binary

This patch makes the use of controllers available from script more generic.
All possible controllers in Linux kernel are to be kept as enum parameters
and a corresponding mapping is done in both, the script and binary. The
testcases are no more hardcoded with respect to controllers. The function
set_controller() need to be updated with respect to the controllers and
control file.
The challenges yet to be solved are:
(1)Choosing appropriate control file
(2)Choosing appropriate control value dynamicaly.

Thoughts are most welcome.

Signed-off-by: Sudhir Kumar <skumar@linux.vnet.ibm.com>
git-svn-id: https://libcg.svn.sourceforge.net/svnroot/libcg/trunk@259 4f4bb910-9a46-0410-90c8-c897d4f1cd53