* Use the 'p' format unit instead of manually called PyObject_IsTrue().
* Pass boolean value instead 0/1 integers to functions that needs boolean.
* Convert some arguments to boolean only once.

For example, rename PyTuple_Fini() to _PyTuple_Fini().

These functions are only declared in the internal C API.

In pylifecycle.c: pass tstate argument, rather than interp argument,
to functions.

* Rename PyImport_Cleanup() to _PyImport_Cleanup() and move it to the
  internal C API. Add 'tstate' parameters.
* Remove documentation of _PyImport_Init(), PyImport_Cleanup(),
  _PyImport_Fini(). All three were documented as "For internal use
  only.".

* Add 'tstate' parameter to many internal import.c functions.
* _PyImportZip_Init() now gets 'tstate' parameter rather than
  'interp'.
* Add 'interp' parameter to _PyState_ClearModules() and rename it
  to _PyInterpreterState_ClearModules().
* Move private _PyImport_FindBuiltin() to the internal C API; add
  'tstate' parameter to it.
* Remove private _PyImport_AddModuleObject() from the C API:
  use public PyImport_AddModuleObject() instead.
* Remove private _PyImport_FindExtensionObjectEx() from the C API:
  use private _PyImport_FindExtensionObject() instead.

* Replace global var Py_VerboseFlag with interp->config.verbose.
* Add _PyErr_NoMemory(tstate) function.
* Add tstate parameter to _PyEval_SetCoroutineOriginTrackingDepth()
  and move the function to the internal API.
* Replace _PySys_InitMain(runtime, interp)
  with _PySys_InitMain(runtime, tstate).

This reverts commit 396e0a8d9dc65453cb9d53500d0a620602656cfe.

This reverts commit 6a150bcaeb190d1731b38ab9c7a5d1a352847ddc.

This patch implements per opcode cache mechanism, and use it in
only LOAD_GLOBAL opcode.

Based on Yury's opcache3.patch in bpo-26219.