asyncio.tests: Autodiscover asyncio tests. Patch by Vajrasky Kok. Closes #20668
inspect: Fix getcallargs() to raise correct TypeError

... for missing keyword-only arguments. Patch by Jeremiah Lowin.
Closes #20816.
inspect: Fix getcallargs() to fail correctly if more than 3 args are missing.

Patch by Jeremiah Lowin. Closes #20817.
Issue #6676: Ensure a meaningful exception is raised when attempting
to parse more than one XML document per pyexpat xmlparser instance.
(Original patches by Hirokazu Yamamoto and Amaury Forgeot d'Arc, with
suggested wording by David Gutteridge)
Issue #17654: Ensure IDLE menus are customized properly on OS X for
non-framework builds and for all variants of Tk.