Issue #21197: Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX.
Reverted 16efa8d27e4c after discussion with Eric.
asyncio.tasks: Make sure CoroWrapper.send proxies one argument correctly

Issue #21209.
- Issue #21223: Pass test_site/test_startup_imports when some of the extensions
  are built as builtins.
Closes Issue 21222.

Passing name keyword argument to mock.create_autospec now works.
Run test_urllib2_localnet tests using unittest.main().

Capture threads in the setUpModule and cleanup threads in the tearDownModule.
Closes issue 21239. unittest.mock.patch.stopall() did not work deterministically when the same name was patched multiple times.
Issue #21245: updated documentation on exception() method and function.
#20874: update tutorial wording: sophisticated line editing is now standard.

Patch by Rafael Mejia.
#20874: reflow paragraph.
#15840: make docs consistent by saying operations on closed files raise ValueError.

Patch by Caelyn McAulay.

Neither Caelyn nor I could find any cases in 2.7 or 3.4/5 where an
operation on a closed stream raised IOError; generally the C
implementations have a macro to check for the stream being closed, and
these macros all raised ValueError.  If we find any, a new bug should
be opened.
#1704474: mark refleak test as specific to CPython

Patch by Christian Hudon.
Issue #18566: Clarify unittest setUp, tearDown doc. Patch by Nitika Agarwal.
#18566: Whitespace