Re-organize directory structure (#4971)

See discussion in #2491

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

stdlib/@python2/glob.pyi

@@ -0,0 +1,7 @@
+from typing import AnyStr, Iterator, List, Union
+
+def glob(pathname: AnyStr) -> List[AnyStr]: ...
+def iglob(pathname: AnyStr) -> Iterator[AnyStr]: ...
+def glob1(dirname: Union[str, unicode], pattern: AnyStr) -> List[AnyStr]: ...
+def glob0(dirname: Union[str, unicode], basename: AnyStr) -> List[AnyStr]: ...
+def has_magic(s: Union[str, unicode]) -> bool: ...  # undocumented