Smack and TOMOYO

Thank you very much for your informative comment. Now the reason EL disabled Smack and TOMOYO is clear to me and I understood why RH did so. I came to realize that if one wants his work (software) to be used globally, making it in-tree is not the goal but an important first step. Making software in-tree is technical, but affecting distributors decision should involve non-technical issues, I guess.