- nx: * removed methods ::nx::Class.alloc and ::nx::Class.dealloc from predefined method-set * added defintions such that these methods can be loaded via ::nsf::method::require ::nx::Class alloc ::nsf::method::require ::nx::Class dealloc
* make explicit that "method ... require" returns a method-handle
* removed misleading reference in error message, when a class-spefic method was called on an object; solution is somewhat dangerous for potentially unknwon client data