- 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)
- new flag for configure: "nx::configure checkarguments on|off" - turn off argument-checking for non-converters, when checking is off (per default, it is on) - extended regression test for optional argument checking