It is a class 2 server, supporting locking. LOCK method allows Timeout header to be omitted, and complains if no body. Store the creationdate of a redirect reference in the property store explicitly since there is nothing in the file system from which we can get it.
Server now handles excpetions when file is read-only in the file system.
Fixed obscure bugs having to do with inheriting locks from parents. Instead, it does nothing. Thanks to Joe Orton for bug reports. Fix bug where unsupported methods got stack trace. Got rid of 401 responses, since no authentication is supported yet.