Re-organize directory structure (#4971)

See discussion in #2491

Co-authored-by: Ivan Levkivskyi <ilevkivskyi@dropbox.com>

stdlib/@python2/repr.pyi

@@ -0,0 +1,34 @@
+from typing import Any, List
+
+class Repr:
+    maxarray: int
+    maxdeque: int
+    maxdict: int
+    maxfrozenset: int
+    maxlevel: int
+    maxlist: int
+    maxlong: int
+    maxother: int
+    maxset: int
+    maxstring: int
+    maxtuple: int
+    def __init__(self) -> None: ...
+    def _repr_iterable(self, x, level: complex, left, right, maxiter, trail=...) -> str: ...
+    def repr(self, x) -> str: ...
+    def repr1(self, x, level: complex) -> str: ...
+    def repr_array(self, x, level: complex) -> str: ...
+    def repr_deque(self, x, level: complex) -> str: ...
+    def repr_dict(self, x, level: complex) -> str: ...
+    def repr_frozenset(self, x, level: complex) -> str: ...
+    def repr_instance(self, x, level: complex) -> str: ...
+    def repr_list(self, x, level: complex) -> str: ...
+    def repr_long(self, x, level: complex) -> str: ...
+    def repr_set(self, x, level: complex) -> str: ...
+    def repr_str(self, x, level: complex) -> str: ...
+    def repr_tuple(self, x, level: complex) -> str: ...
+
+def _possibly_sorted(x) -> List[Any]: ...
+
+aRepr: Repr
+
+def repr(x) -> str: ...