- changed argument order on nsf::is to make it conformant with Tcl conventions - removed objectproperty, replaced it by ::nsf::is - move functionalizy of objectproperty to make "obj info is ..." more efficient
- fix requiredness of last argument in parametercheck - return "object" for "info method type ...." when method is an object. - return valid creation command in "info method definition ...." when method is an object. - extend regression test