next_row instead of this_row has to be unset at this point.
- added victor's patch to omit deprecated messages of "ns_info tcllib". Background: naviserver supports multiple (virtual) servers, which might have different tcllibs. Therefore, the preferred command to query this was moved to "ns_server ?-server s? tcllib" and "ns_info tcllib" was deprecated. From the OpenACS point of view, one wants to locate the actual library. Since the variable does not change, it is fine to store it in a per-thread variable which can be efficiently accessed.