Use a correct relative path for openshift.inc

Since Openshift doesn't allow direct modification of the php.ini and also doesn't have the libs folder included in php. This will fix the problem and allow users to run the cake bakery script or access the content on the web.

Resolves https://openshift.redhat.com/community/forums/openshift/problem-with-openshift-cakephp-template-cannot-find-openshiftinc#comment-25522

And

https://openshift.redhat.com/community/forums/openshift/problems-with-path-of-openshiftinc-cakephp