Re-organize directory structure (#4971)

See discussion in #2491

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

stdlib/@python2/BaseHTTPServer.pyi

@@ -0,0 +1,41 @@
+import mimetools
+import SocketServer
+from typing import Any, BinaryIO, Callable, Mapping, Optional, Tuple, Union
+
+class HTTPServer(SocketServer.TCPServer):
+    server_name: str
+    server_port: int
+    def __init__(self, server_address: Tuple[str, int], RequestHandlerClass: Callable[..., BaseHTTPRequestHandler]) -> None: ...
+
+class BaseHTTPRequestHandler(SocketServer.StreamRequestHandler):
+    client_address: Tuple[str, int]
+    server: SocketServer.BaseServer
+    close_connection: bool
+    command: str
+    path: str
+    request_version: str
+    headers: mimetools.Message
+    rfile: BinaryIO
+    wfile: BinaryIO
+    server_version: str
+    sys_version: str
+    error_message_format: str
+    error_content_type: str
+    protocol_version: str
+    MessageClass: type
+    responses: Mapping[int, Tuple[str, str]]
+    def __init__(self, request: bytes, client_address: Tuple[str, int], server: SocketServer.BaseServer) -> None: ...
+    def handle(self) -> None: ...
+    def handle_one_request(self) -> None: ...
+    def send_error(self, code: int, message: Optional[str] = ...) -> None: ...
+    def send_response(self, code: int, message: Optional[str] = ...) -> None: ...
+    def send_header(self, keyword: str, value: str) -> None: ...
+    def end_headers(self) -> None: ...
+    def flush_headers(self) -> None: ...
+    def log_request(self, code: Union[int, str] = ..., size: Union[int, str] = ...) -> None: ...
+    def log_error(self, format: str, *args: Any) -> None: ...
+    def log_message(self, format: str, *args: Any) -> None: ...
+    def version_string(self) -> str: ...
+    def date_time_string(self, timestamp: Optional[int] = ...) -> str: ...
+    def log_date_time_string(self) -> str: ...
+    def address_string(self) -> str: ...