I'm not sure what they are, are they required by an application? Any files I don't want to be scanned I just put into a directory that begins with a . Which 'hides' the folder, but can still be read by a file explorer.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?