The coding cookie (ex: "# coding: latin1") is now ignored in the
command passed to the -c command line option.
Since pymain_run_command() uses UTF-8, pass PyCF_IGNORE_COOKIE
compiler flag to the parser.
pymain_run_python() no longer propages compiler flags between
function calls.
Add pycore_atomic_funcs.h internal header file: similar to
pycore_atomic.h but don't require to declare variables as atomic.
Add _Py_atomic_size_get() and _Py_atomic_size_set() functions.
Port the _thread extension module to the multiphase initialization
API (PEP 489) and convert its static types to heap types.
Add a traverse function to the lock type, so the garbage collector
can break reference cycles.
"uint8_t day" is unsigned and so "day < 0" test is always true.
Remove the test to fix the following warnings on Windows:
modules\_zoneinfo.c(1224): warning C4068: unknown pragma
modules\_zoneinfo.c(1225): warning C4068: unknown pragma
modules\_zoneinfo.c(1227): warning C4068: unknown pragma
* Fix ExceptHookArgsType name: "_thread.ExceptHookArgs", instead of
"_thread._ExceptHookArgs".
* PyInit__thread() no longer intializes interp->num_threads to 0:
it is already done in PyInterpreterState_New().
* Use PyModule_AddType(), Py_NewRef() and Py_XNewRef().
* Replace str_dict variable with _Py_IDENTIFIER(__dict__).
* Remove assert(Py_IS_TYPE(obj, &Locktype)) from release_sentinel()
to avoid having to retrive the type from this callback.
* Add thread_bootstate_free()
* Rename t_bootstrap() to thread_run()
* bootstate structure: rename keyw member to kwargs
