nsf.c: - implememted cget as a configure-like method, dropped ensemble method variant nx.tcl: - simplified "/obj|cls/ delete method" due to resolving capabilities in nsf::delete::method
nsf.c: - extended nsf::method::delete to handle ensemble names nx.tcl: - added tk/incr-tcl style cget methods on class/object levels. - improve copy handling with other child-types of the slot container working - make sure to ignore non-slot-type objects in slot introspection - worked on regression test until "methods.test". others are missing, but maybe reconsideration