Missing special attributes of class instances inherited from object (#943)

* Missing special attributes of class instances inherited from object
* object.__reduce__ returns a tuple

It's up to its inheritors to return either a tuple or a string.

Author: Andrey Vlasovskikh

stdlib/2/__builtin__.pyi

@@ -31,6 +31,7 @@ class object:
     __doc__ = ...  # type: Optional[str]
     __class__ = ...  # type: type
     __slots__ = ...  # type: Optional[Union[str, unicode, Iterable[Union[str, unicode]]]]
+    __module__ = ...  # type: str
 
     def __init__(self) -> None: ...
     def __new__(cls) -> Any: ...
@@ -44,6 +45,8 @@ class object:
     def __getattribute__(self, name: str) -> Any: ...
     def __delattr__(self, name: str) -> None: ...
     def __sizeof__(self) -> int: ...
+    def __reduce__(self) -> tuple: ...
+    def __reduce_ex__(self, protocol: int) -> tuple: ...
 
 class type(object):
     __bases__ = ...  # type: Tuple[type, ...]

stdlib/3/builtins.pyi

@@ -34,6 +34,7 @@ class object:
     __class__ = ...  # type: type
     __dict__ = ...  # type: Dict[str, Any]
     __slots__ = ...  # type: Optional[Union[str, Iterable[str]]]
+    __module__ = ...  # type: str
 
     def __init__(self) -> None: ...
     def __new__(cls) -> Any: ...
@@ -47,6 +48,8 @@ class object:
     def __getattribute__(self, name: str) -> Any: ...
     def __delattr__(self, name: str) -> None: ...
     def __sizeof__(self) -> int: ...
+    def __reduce__(self) -> tuple: ...
+    def __reduce_ex__(self, protocol: int) -> tuple: ...
 
     if sys.version_info >= (3, 6):
         def __init_subclass__(cls) -> None: ...