- new nsf::next cmd. receives 0 or 1 argument, which might be a list of arguments. This avoids ambiguity of ::xotcl::next with "--noArgs". - renamed namespace_copycmds and namespace_copyvars to nscopycmds and nscopyvars (we don't use "_" in nsf::*-names as delimiters elsewhere) - renamed __qualify to qualify (it is a non-exported cmd)