Jesus fucking Christ my nigga.
Google isn't fucking hacking your site and looking at the server side code to see if you are cloaking other sites, and even if they did know, they wouldn't give a flying fuck. They only care and notice (sometimes) if you cloak them. And even then they only get pissed if it's to manipulate ranking or fuck with adsense.
The robots.txt shit you quoted isn't even relevant, all they're saying is if you want to block a bitch ass bot don't rely on robots.txt to do it since it can be ignored, rely on another method to identify and block the bot.
EDIT: I feel like you have never cloaked anything in your life and need to get back to basics to get oriented.