Patch from Nikolaus Rath.

Skipped tests are now marked as skipped, formerly commented-out or
renamed-so-it-doesn't-look-like-a-test tests are uncommented, properly named,
and unconditionally skipped, some tests that simply didn't run before
are now able to run, and a few are split into multiple methods instead of
skipping via 'return' in the middle of a method.  Also, a couple of unused
files are removed completely.

[1] https://mail.python.org/pipermail/python-dev/2014-June/135018.html

repr(Handle) is shorter for function: "foo" instead of "<function foo at
0x...>". It now also includes the source of the callback, filename and line
number where it was defined, if available.

repr(Task) now also includes the current position in the code, filename and
line number, if available. If the coroutine (generator) is done, the line
number is omitted and "done" is added.

bindings for Idle so Caps Lock does not disable them. Patch by Roger Serwy.

(issues #21677, #21310).

Initial patch by Olive Kilburn.

be empty.

Add BaseEventLoop._closed attribute and use it to check if the event loop was
closed or not, instead of checking different attributes in each subclass of
BaseEventLoop.

run_forever() and run_until_complete() methods now raise a RuntimeError('Event loop is
closed') exception if the event loop was closed.

BaseProactorEventLoop.close() now also cancels "accept futures".

while still being written to. With no console, this closed Idle.
Also add missing import and a few other changes.

Patch by Milan Oberkirch.

Patch by Saimadhav Heblikar. (2 head merge)

Original patch by Amaury Forgeot d'Arc with a test by bdettmer.

Patch by Amandine Lee.

Patch by Víctor Terrón.

Patch by Skyler Leigh Amador.

Patch by εσχατοκυριος.

Patch by Katherine Busch.