fix copy and assignment of xmlrpc client
fix copy and assignment of xmlrpc client

maekitalo/cxxtools,maekitalo/cxxtools,OlafRadicke/cxxtools,OlafRadicke/cxxtools,OlafRadicke/cxxtools,maekitalo/cxxtools,maekitalo/cxxtools,OlafRadicke/cxxtools