Add a few ``__dynamic__ = 0'' lines in classes that need to preserve

Add a few ``__dynamic__ = 0'' lines in classes that need to preserve
staticness when __dynamic__ = 1 becomes the default:

- Some classes which are used to test the difference between static
  and dynamic.

- Subclasses of complex: complex uses old-style numbers and the slot
  wrappers used by dynamic classes only support new-style numbers.
  (Ideally, the complex type should be fixed, but that looks like a
  labor-intensive job.)