- fix bug and potential security hole: before this patch, OpenACS was trying to serve files with arbitrary extensions (i.e. not included in the kernel parameter ExtensionPrecedence) in case the requested file was not found. This is quite dangerous and breaks e.g. the listing of openacs.org/repository (which is a directory), since the directory is moved every night into openacs.org/repository.bak. With the given logic, it tries to server the .bak directory as a file (which does of course not work). That blind logic is not inecessary, and is actually a potential attack vector.