At the HEAD of 3.10, the implementation of `typing.Annotated` has
been changed to have __qualname__.

Fix test: Tests has been broken with pygments-2.10+

Fix #9537: autodoc: Some typing.* objects are broken

At the HEAD of 3.10, the implementation of `typing._GenericAlias` has
been changed to have correct _name and __name__.

Fix #9504: autodoc: generate incorrect reference to the parent class

Autodoc generates incorrect references to the parent class the target
class inherites the class having `_name` attribute.  It conciders the
parent is a kind of SpecialForm'ed class by mistake.  This uses
`isinstance(X, SpecialForm)` to check that.

Note: SpecialForm became a class since Python 3.7.

Recently, `types.Union` was renamed to `types.UnionType` on the HEAD
of 3.10 (refs: python/cpython#27342). After this change, sphinx-build
has been crashed because of ImportError.