Add Python 3 modules, and more Python 2 modules.

Also, sort names alphabetically and add module docstrings.

python2/thread.py

@@ -0,0 +1,51 @@
+"""Stub file for the 'thread' module."""
+# This is an autogenerated file. It serves as a starting point
+# for a more percise manual annotation of this module.
+# Feel free to edit the source below, but remove this header when you do.
+
+LockType = Undefined(lock)
+error = Undefined(object)
+
+def _count() -> int: pass
+
+def allocate() -> lock: pass
+
+def allocate_lock() -> lock: pass
+
+def exit() -> object:
+    raise SystemExit()
+
+def exit_thread() -> object:
+    raise SystemExit()
+
+def get_ident() -> int: pass
+
+def interrupt_main() -> NoneType: pass
+
+def stack_size(*args, **kwargs) -> int:
+    raise ValueError()
+
+def start_new(*args, **kwargs) -> int:
+    raise TypeError()
+    raise MemoryError()
+
+def start_new_thread(*args, **kwargs) -> int:
+    raise TypeError()
+    raise MemoryError()
+
+
+class _local(object):
+    pass
+
+class _localdummy(object):
+    pass
+
+class lock(object):
+    def __enter__(*args, **kwargs) -> bool: pass
+    def __exit__(*args, **kwargs) -> NoneType: pass
+    def acquire(*args, **kwargs) -> bool: pass
+    def acquire_lock(*args, **kwargs) -> bool: pass
+    def locked() -> bool: pass
+    def locked_lock() -> bool: pass
+    def release() -> NoneType: pass
+    def release_lock() -> NoneType: pass