Integrate with Profile Privacy module

Not sure whether this is best considered a bug report or a feature request, but when the Profile Privacy module is insalled and the First and Last name fields are allowed to have their privacy overridden by the user, the RealName module should respect this and also not use the fields. If both/all of the fields tokenized in the RealName configuration are private, then the entire RealName configuration should be ignored and it should forward onto the parent and return the user name instead.