Re-organize directory structure (#4971)

See discussion in #2491

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

stdlib/@python2/tokenize.pyi

@@ -0,0 +1,133 @@
+from typing import Any, Callable, Dict, Generator, Iterable, Iterator, List, Tuple, Union
+
+__author__: str
+__credits__: str
+
+AMPER: int
+AMPEREQUAL: int
+AT: int
+BACKQUOTE: int
+Binnumber: str
+Bracket: str
+CIRCUMFLEX: int
+CIRCUMFLEXEQUAL: int
+COLON: int
+COMMA: int
+COMMENT: int
+Comment: str
+ContStr: str
+DEDENT: int
+DOT: int
+DOUBLESLASH: int
+DOUBLESLASHEQUAL: int
+DOUBLESTAR: int
+DOUBLESTAREQUAL: int
+Decnumber: str
+Double: str
+Double3: str
+ENDMARKER: int
+EQEQUAL: int
+EQUAL: int
+ERRORTOKEN: int
+Expfloat: str
+Exponent: str
+Floatnumber: str
+Funny: str
+GREATER: int
+GREATEREQUAL: int
+Hexnumber: str
+INDENT: int
+
+def ISEOF(x: int) -> bool: ...
+def ISNONTERMINAL(x: int) -> bool: ...
+def ISTERMINAL(x: int) -> bool: ...
+
+Ignore: str
+Imagnumber: str
+Intnumber: str
+LBRACE: int
+LEFTSHIFT: int
+LEFTSHIFTEQUAL: int
+LESS: int
+LESSEQUAL: int
+LPAR: int
+LSQB: int
+MINEQUAL: int
+MINUS: int
+NAME: int
+NEWLINE: int
+NL: int
+NOTEQUAL: int
+NT_OFFSET: int
+NUMBER: int
+N_TOKENS: int
+Name: str
+Number: str
+OP: int
+Octnumber: str
+Operator: str
+PERCENT: int
+PERCENTEQUAL: int
+PLUS: int
+PLUSEQUAL: int
+PlainToken: str
+Pointfloat: str
+PseudoExtras: str
+PseudoToken: str
+RBRACE: int
+RIGHTSHIFT: int
+RIGHTSHIFTEQUAL: int
+RPAR: int
+RSQB: int
+SEMI: int
+SLASH: int
+SLASHEQUAL: int
+STAR: int
+STAREQUAL: int
+STRING: int
+Single: str
+Single3: str
+Special: str
+String: str
+TILDE: int
+Token: str
+Triple: str
+VBAR: int
+VBAREQUAL: int
+Whitespace: str
+chain: type
+double3prog: type
+endprogs: Dict[str, Any]
+pseudoprog: type
+single3prog: type
+single_quoted: Dict[str, str]
+t: str
+tabsize: int
+tok_name: Dict[int, str]
+tokenprog: type
+triple_quoted: Dict[str, str]
+x: str
+
+_Pos = Tuple[int, int]
+_TokenType = Tuple[int, str, _Pos, _Pos, str]
+
+def any(*args, **kwargs) -> str: ...
+def generate_tokens(readline: Callable[[], str]) -> Generator[_TokenType, None, None]: ...
+def group(*args: str) -> str: ...
+def maybe(*args: str) -> str: ...
+def printtoken(type: int, token: str, srow_scol: _Pos, erow_ecol: _Pos, line: str) -> None: ...
+def tokenize(readline: Callable[[], str], tokeneater: Callable[[Tuple[int, str, _Pos, _Pos, str]], None]) -> None: ...
+def tokenize_loop(readline: Callable[[], str], tokeneater: Callable[[Tuple[int, str, _Pos, _Pos, str]], None]) -> None: ...
+def untokenize(iterable: Iterable[_TokenType]) -> str: ...
+
+class StopTokenizing(Exception): ...
+class TokenError(Exception): ...
+
+class Untokenizer:
+    prev_col: int
+    prev_row: int
+    tokens: List[str]
+    def __init__(self) -> None: ...
+    def add_whitespace(self, _Pos) -> None: ...
+    def compat(self, token: Tuple[int, Any], iterable: Iterator[_TokenType]) -> None: ...
+    def untokenize(self, iterable: Iterable[_TokenType]) -> str: ...