application paths for robots.txt in deployment descriptor?

Perhaps slightly off-topic: Our poor overworked sysadmin has been having the devil of a time keeping up with the content of robots.txt. Since this file is public information by nature, I had no problem composing a useful one for him for our XWiki instances - simply copied from the one at xwiki.org - but he needs the same information for all the other apps deployed to his Tomcat servers. Of course, he could do the same thing with the others, if there were known to be accessible instances, but it really is outside his normal purview, and it occurred to me that this is naturally a component of an application's deployment. So, my question is: Has anyone thought of putting an application's description of searchable paths into a deployable file, to be appended to (or better, merged into) robots.txt? and if so, is there a more-or-less standard way of doing it? Less interesting at the moment is: when will XWiki do this also? and is this JIRA fodder? brain[sic]