Move contents of builtins/* to stdlib/*. This simplifies finding stubs.

stdlib/3/array.pyi

@@ -0,0 +1,49 @@
+# Stubs for array
+
+# Based on http://docs.python.org/3.2/library/array.html
+
+from typing import Any, Iterable, Tuple, List, Iterator, BinaryIO, overload
+
+typecodes = ...  # type: str
+
+class array:
+    typecode = ...  # type: str
+    itemsize = ...  # type: int
+    def __init__(self, typecode: str,
+                 initializer: Iterable[Any] = ...) -> None: ...
+    def append(self, x: Any) -> None: ...
+    def buffer_info(self) -> Tuple[int, int]: ...
+    def byteswap(self) -> None: ...
+    def count(self, x: Any) -> int: ...
+    def extend(self, iterable: Iterable[Any]) -> None: ...
+    def frombytes(self, s: bytes) -> None: ...
+    def fromfile(self, f: BinaryIO, n: int) -> None: ...
+    def fromlist(self, list: List[Any]) -> None: ...
+    def fromstring(self, s: bytes) -> None: ...
+    def fromunicode(self, s: str) -> None: ...
+    def index(self, x: Any) -> int: ...
+    def insert(self, i: int, x: Any) -> None: ...
+    def pop(self, i: int = ...) -> Any: ...
+    def remove(self, x: Any) -> None: ...
+    def reverse(self) -> None: ...
+    def tobytes(self) -> bytes: ...
+    def tofile(self, f: BinaryIO) -> None: ...
+    def tolist(self) -> List[Any]: ...
+    def tostring(self) -> bytes: ...
+    def tounicode(self) -> str: ...
+
+    def __len__(self) -> int: ...
+    def __iter__(self) -> Iterator[Any]: ...
+    def __str__(self) -> str: ...
+    def __hash__(self) -> int: ...
+
+    @overload
+    def __getitem__(self, i: int) -> Any: ...
+    @overload
+    def __getitem__(self, s: slice) -> 'array': ...
+
+    def __setitem__(self, i: int, o: Any) -> None: ...
+    def __delitem__(self, i: int) -> None: ...
+    def __add__(self, x: 'array') -> 'array': ...
+    def __mul__(self, n: int) -> 'array': ...
+    def __contains__(self, o: object) -> bool: ...