(cherry picked from commit 9616a82e)

* bpo-30414: multiprocesing.Queue._feed do not break from main loop on exc

Queue background running thread was not handling exceptions correctly.
Any exception occurred inside thread (putting unpickable object) cause
feeder to finish running. After that every message put into queue is
silently ignored.

* bpo-30414: multiprocesing.Queue._feed do not break from main loop on exc

Queue background running thread was not handling exceptions correctly.
Any exception occurred inside thread (putting unpickable object) cause
feeder to finish running. After that every message put into queue is
silently ignored..
(cherry picked from commit bc50f03d)

Ran the docstrings through spell checker, and fixed spelling issues.

(cherry picked from commit 81755471)

Based on patches by Duane Griffin and Tim Mitchell.
(cherry picked from commit 753bca39)

[2.7] bpo-25794: Fix `type.__setattr__()` for non-interned or unicode attribute names. (GH-1652) (#1675)

Based on patch by Eryk Sun.
(cherry picked from commit d896985b)

Patch by Davin with help from Marc.

Warnings emitted when compile a regular expression now always point
to the line in the user code.  Previously they could point into inners
of the re module if emitted from inside of groups or conditionals.

(cherry picked from commit c7ac7280)

Running Python with the -3 option now warns about regular expression
syntax that is invalid or has different semantic in Python 3
or will change the behavior in future Python versions.

Running Python with the -3 option now emits deprecation warnings for
getchildren() and getiterator() methods of the Element class in the
xml.etree.cElementTree module and when pass the html argument to
xml.etree.ElementTree.XMLParser().

Fixed a deprecation warning about the doctype() method of the
xml.etree.ElementTree.XMLParser class.  Now it is emitted only when
define the doctype() method in the subclass of XMLParser.

Fixed a bug in the test_bug_200708_close test method.  An EchoTarget
instance was incorrectly passed to XMLParser() as the html argument and
silently ignored.

Tests no longer failed when use the -m option for running only selected
test methods. Checking warnings now is more specific, warnings are
expected only when use deprecated features.

Catch the Windows socket WSAEINVAL error (code 10022) in imaplib
on shutdown(SHUT_RDWR): An invalid operation was attempted

This error occurs sometimes on SSL connections.
(cherry picked from commit 83a2c287)

* Use explicit numbering for footnotes referred by explicit number.
* Fix literal strings formatting in howto/urllib2.rst.
* Add `:noindex:` to duplicated definition of list.
* Update susp-ignored.csv for reference/expressions.rst.
(cherry picked from commit d97b7dc9)

* bpo-30357 each test in test_thread waits until all spawn threads finish

* bpo-30357 each test in test_thread waits until all spawn threads finish

* bpo-30357: test_thread now uses threading_cleanup() (#1592)

test_thread: setUp() now uses support.threading_setup() and
support.threading_cleanup() to wait until threads complete to avoid
random side effects on following tests.
Co-Authored-By: Victor Stinner <victor.stinner@gmail.com>

* bpo-30357: test_thread now uses threading_cleanup() (#1592)

test_thread: setUp() now uses support.threading_setup() and
support.threading_cleanup() to wait until threads complete to avoid
random side effects on following tests.
Co-Authored-By: Victor Stinner <victor.stinner@gmail.com>

(cherry picked from commit f25a8de8)

Also backport new functions temp_dir() and python_is_optimized().
temp_cwd() now accepts None as a name (means using tempfile.mkdtemp).
check_syntax_error() now accepts arguments lineno and offset.
Use more specific error messages in get_attribute().

Build the 'suspicious' doc target, turn on warnings-as-errors on the
docs, and always build the docs.  This better matches master's doc build
setup.

Fix for bpo-6393: Python crashes on OSX when $LANG is set to some (but
not all) invalid values due to an invalid result from nl_langinfo

(cherry picked from commit 6d77e071)

Fix sysconfig.is_python_build() if Python is built with Visual Studio
2008 (VS 9.0).

* bpo-30283: regrtest: backport test_coverage()

* Add --coverage option, the option was already described in the doc
* When coverage is used, regrtest now pass all options to runtest()
  and calls also accumulate_result() (as done when coverage is not
  used).
* bpo-25260: Fix coverage on Windows: remove the list of ignored
  directories.

* bpo-30283: regrtest: backport test_slow_interrupted()

* Fix regrtest to report interrupted tests as omitted rather than
  failed.
* bpo-25260: Fix coverage on Windows: remove the list of ignored
  directories.

* bpo-30283: Fix test_regrtest on Visual Studio 2008

Skip Tools\buildbot\test.bat and PCbuild\rt.bat if Python was not
compiled in PCbuild (but compiled in PC\VS9.0\ for example).

Try to fix test_startfile's inability to clean up after itself in
time. Patch by Jeremy Kloth.

Fix the following support.rmtree() error while trying to remove the
temporary working directory used by Python tests:

WindowsError: [Error 32] The process cannot access the file because
it is being used by another process: ...

Original commit: 8a53dbeb

[2.7] gitignore: add rules for the PC/ directory

* bpo-29243: Fix Makefile with respect to --enable-optimizations

When using the Profile Guided Optimization (./configure --enable-optimizations)
Python is built not only during `make` but rebuilt again during `make test`,
`make install` and others. This patch fixes the issue.

Note that this fix produces no change at all in the Makefile if configure is
run witout --enable-optimizations.

* !squash.
(cherry picked from commit a1054c3b)

* regrtest: add --slowest alias to --slow

* make buildbottest: add --slowest option

* regrtest: add "- " prefix to --slowest output

* regrtest: Fix an outdated comment

* regrtest: replace PermissionError

Replace PermissionError with OSError and check on exc.errno.
PermissionError was added to Python 3.3.

* regrtest: add -3 -tt options to run Python scripts

* regrtest: backport --list-tests option

* regrtest: backport "Tests result: xxx" summary

* regrtest: backport total duration

* regrtest: add timestamp to the progress

* regrtest: describe previous test state

* Add the state of the test: passed, failed, etc.
* If a test took longer than 30 seconds, log its execution time

* regrtest: -jN logs running workers

* regrtest: mention if tests are run in parallel

* regrtest: parallel mode is more verbose during wait

Display running tests every 30 seconds if no test completed in the
meanwhile.

* test_regrtest: fix typo in SubprocessRun

* bpo-30283: regrtest: add --testdir option

* bpo-30283: Backport _testcapi.raise_signal()

Function used by test_regrtest to simulate an interrupted unit test.

* bpo-30283: Backport test_regrtest from master

Fix the following warning when test_inspect.py is compiled to
test_inspect.pyc:

test_inspect.py:505: SyntaxWarning: tuple parameter unpacking has been removed in 3.x
  def spam_deref(a, b, c, d=3, (e, (f,))=(4, (5,)), *g, **h):

Replace also test.test_support import with test.support.