selectors: Make sure EpollSelecrtor.select() works when no FD is registered.

Closes issue #23009.

--HG--
branch : 3.4
selectors: Make sure EpollSelecrtor.select() works when no FD is registered.

Closes issue #23009.
selectors: Fix typo in comment.

--HG--
branch : 3.4
selectors: Fix typo in comment.
NEWS: Add news entry for issue #23009.

--HG--
branch : 3.4
NEWS: Add news entry for issue #23009.
NEWS: Remove duplicate entry

--HG--
branch : 3.4
null merge with 3.4.
Issue #21740: Support wrapped callables in pydoc. Patch by Claudiu Popa.
inspect: Fix getsource() to load updated source of reloaded module

Issue #1218234. Initial patch by Berker Peksag.
inspect: Fix getsource() to load updated source of reloaded module

Issue #1218234. Initial patch by Berker Peksag.

--HG--
branch : 3.4
null merge with 3.4