added support for legacy vs newest version of oom-killer.
legacy oom available in kernel versions 2.6.11 to 2.6.35.
new version on and after 2.6.36.

also required use of the conf file for specifying programs and kill thresholds.
added comment
Merge pull request #1 from acquireflyingjohns/master

added support for different versions of oom-killer and req'd use of conf file