bpo-33564: Add async to IDLE's code context block openers. (GH-6960) (#6961)

(cherry picked from commit d89ca94847d943b883ebcc68e4f0a18cb042ed0d)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

bpo-33559: Attribute changed repr of exceptions (GH-6954)

(cherry picked from commit fb9dd8915314d857161de89fcbbb041f2b49fc22)

Co-authored-by: Miro Hrončok <miro@hroncok.cz>

Fix Windows build of Python for latest WinSDK. (GH-6874) (GH-6952)

(cherry picked from commit c0ee341b29bd7d978b49272a2c0e2dcfa77404d5)

Co-authored-by: Carl Meyer <carl@oddbird.net>

asyncio/docs: Mark asyncio.run() as provisional in 3.7. (GH-6946) (GH-6949)

(cherry picked from commit d8d715f5148d0c10e93a79bc4172fbd9c5b3a86e)

Co-authored-by: Yury Selivanov <yury@magic.io>

bpo-33559: Document changed repr of exceptions (GH-6943) (GH-6950)

(cherry picked from commit 631753fcc5e88bbbad402933e77295675cfe1fee)

Co-authored-by: Miro Hrončok <miro@hroncok.cz>

Only upload docs for CI build and not pull requests (GH-6945)

(cherry picked from commit 48b1f3773cecb0aec2b14d972bf8453e4e8f807f)

Co-authored-by: Steve Dower <steve.dower@microsoft.com>

Provide a little better debug output (GH-6940) (#6942)

(cherry picked from commit 273f51f5ca9dd0420d327c95281b24078f8feeef)

Co-authored-by: Barry Warsaw <barry@python.org>

bpo-33537: Add an __all__ to importlib.resources (GH-6920) (#6941)

(cherry picked from commit 0ed66df5242138fc599b4735749e55f953d9a1e4)

Co-authored-by: Barry Warsaw <barry@python.org>

bpo-33522: Enable CI builds on Visual Studio Team Services (GH-6865) (GH-6926)

(cherry picked from commit e5f41d2f1e0b8b8e61d5fa427c19bd1ea90fd9a3)

Co-authored-by: Steve Dower <steve.dower@microsoft.com>

Update Python Folder.icns icon file to match new macOS look (GH-1780) (GH-6930)

(cherry picked from commit 74fc9c0c09ba72de39f9b71a61ac8506304b6266)

Co-authored-by: Thomas Jones <thomas@tomtecsolutions.com>

bpo-33549: Remove shim and deprecation warning to access DocumentLS.async. (GH-6924) (GH-6929)

`obj.async` is now a syntax error, so the warning/shim is
quasi-unnecessary.
(cherry picked from commit f90f5d5c1d95721e0ca0b1c302e3d13ed34753a8)

Co-authored-by: Matthias Bussonnier <bussonniermatthias@gmail.com>

bpo-13631: Fix the order of initialization for readline libedit on macOS. (GH-6915) (GH-6928)

The editline emulation needs to be initialized *after* the name is
defined. This fixes the long open issue.
(cherry picked from commit c2f082e9d164acfa8f96de9526f0f47ae92c426a)

Co-authored-by: Zvezdan Petkovic <zpetkovic@acm.org>

Fix ClassVar as string fails when getting type hints (GH-6824) (#6912)

(cherry picked from commit 2d2d3b170bdebc085900bfa2a3bc81b5d132d0a8)

Co-authored-by: Nina Zakharenko <nzakharenko@gmail.com>

bpo-32216: Update dataclasses documentation (GH-6913) (#6918)

(cherry picked from commit 713a9367366c88662c39ed20dd6bce22399299f1)

Co-authored-by: Barry Warsaw <barry@python.org>

bpo-24318: Rewrite the README PGO section. (GH-6863)

* bpo-24318: Rewrite the README PGO section.

Merged from a phone on an airplane. :)
(cherry picked from commit 93f9a8a5afb58b1d2e4f27bb46d3d4e0fa8c08f0)

Co-authored-by: Gregory P. Smith <greg@krypto.org>

bpo-33536: Validate make_dataclass() field names. (GH-6906)

(cherry picked from commit 4e81296b1874829912c687eba4d39361ab51e145)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

[3.7] bpo-32257: Add ssl.OP_NO_RENEGOTIATION (GH-5904) (#6877)

The ssl module now contains OP_NO_RENEGOTIATION constant, available with
OpenSSL 1.1.0h or 1.1.1.

Note, OpenSSL 1.1.0h hasn't been released yet.

Signed-off-by: Christian Heimes <christian@python.org>
(cherry picked from commit 67c48016638aac9a15afe6fd6754d53d2bdd6b76)

Co-authored-by: Christian Heimes <christian@python.org>

bpo-33503: Fix the broken pypi link in the source and the documentation (GH-6814) (GH-6872)

(cherry picked from commit 19177fbd5d6d9b29ccc302d65f9d9417ece082ce)

Co-authored-by: Stéphane Wirtel <stephane@wirtel.be>

Minor tweaks to dataclasses docs. (GH-6903)

(cherry picked from commit 7a1c02750171d9895754da5d560700aaba93da56)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

bpo-33534: Remove unneeded test. (GH-6897)

This condition as already tested before this code is called.
(cherry picked from commit 9285835a05ad0319acef111340266c0f85ed549c)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

Reflow dataclasses comments (GH-6893)

To be more consistent with other code (and so people stop hassling me!), reflow the dataclasses comments to not use a single space indentation when continuing a paragraph of text.
(cherry picked from commit f8e7549490d61c92b34bf2de3e03ba2f7b0ac6e1)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

bpo-32216: Add documentation for dataclasses (GH-6886)

This is an initial version that likely requires much polishing. I'm adding it lay out the structure and so we have something to start working from.
(cherry picked from commit 98d50cb8f57eb227c373cb94b8680b12ec8aade5)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

bpo-32384: Skip test when _testcapi isn't available (GH-4940)

(cherry picked from commit 4cc3eb48e1e8289df5153db1c701cae263a1ef86)

Co-authored-by: Isaiah Peng <isaiah@users.noreply.github.com>

bpo-33453: Handle string type annotations in dataclasses. (GH-6768)

(cherry picked from commit 2a7bacbd913cf2bf568b3c0f85a758946d3cf4e9)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

bpo-30928: Update idlelib/NEWS.txt to 2018-05-14. (GH-6873)

(cherry picked from commit 038b21f2caaed0f02fee524277cc61e2c6ae0e9a)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

bpo-33465: Use an unlikely to be built-in C extension in a test (GH-6797) (#6869)

(cherry picked from commit 8709b236fc997077d24b4802320db287640f82e2)

Co-authored-by: Barry Warsaw <barry@python.org>

bpo-33509: Fix _warnings for module_globals=None (GH-6833)

Don't crash on warnings.warn_explicit() if module_globals is not a dict.
(cherry picked from commit b056562860c227bad2e0ba7cd3130e115c007768)

Co-authored-by: Victor Stinner <vstinner@redhat.com>

bpo-29706: Test that IDLE colors async/await as keywords. (GH-6846)

Added to the eye-verified htest, not to the unittests.
Also remove some stray leftover comments.
(cherry picked from commit 389a48ede92bf7965889d554d2cd17b50d6e3d86)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

bpo-28167: bump platform.linux_distribution removal to 3.8 (GH-6669) (GH-6862)

Also bump PendingDeprecationWarning to DeprecationWarning.
(cherry picked from commit 9eb40bc38de83e6ad3fad1931bba1cd36ae88c24)

Co-authored-by: Matthias Bussonnier <bussonniermatthias@gmail.com>

bpo-32604: Remove xid registry. (#6813)

Remove the interpreters testing helper (and xid registry).

bpo-33517: dataclasses: Add the field type to Field repr (GH-6858)

(cherry picked from commit 01abc6ec3a61769c55ee86834a432fb97801d28f)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

Remove accidentally checked in files. (GH-6835) (GH-6844)

(cherry picked from commit 046d311654eb15ccc8f471290334f7ac6aad5f15)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

bpo-16865: Support arrays >=2GB in ctypes. (GH-3006)

(cherry picked from commit 735abadd5bd91db4a9e6f4311969b0afacca0a1a)

Co-authored-by: Segev Finer <segev208@gmail.com>

Add AsyncContextManager to typing module documentation. (GH-6822)

(cherry picked from commit b7b493e2fb00414e4766e1455cfd26ef15c4e5b8)

Co-authored-by: Travis DePrato <773453+travigd@users.noreply.github.com>

bpo-33502: dataclass._Dataclassparams repr: use repr of each member. (GH-6812)

(cherry picked from commit 3059042410dce69806b94be72d5c8055d616f3a3)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

Fixed an unused variable warning introduced in GH-6800 (GH-6816)

(cherry picked from commit 00717a46a120dd8c8c74970fd75d201a5f42ab18)

Co-authored-by: Alex Gaynor <alex.gaynor@gmail.com>

bpo-33497: Add NEWS and ACKS entries. (GH-6838) (GH-6840)

(cherry picked from commit d063b84d9ee435e9ae981c18faccaff5562792c3)

Co-authored-by: Ned Deily <nad@python.org>

bpo-33497: Add errors param to cgi.parse_multipart and make an encoding in FieldStorage use the given errors (GH-6804) (GH-6837)

(cherry picked from commit 545c955be997efd6b3827b981024e6b9945d82d1)

Co-authored-by: Amber Brown <hawkowl@atleastfornow.net>

bpo-20104: Remove posix_spawn from 3.7 (GH-6794)

Remove os.posix_spawn, the API isn't complete and we're still figuring out how it should look. wait for 3.8.

Add versionchanged in create_datagram_endpoint doc (GH-4697)

Most of the parameters were added in 3.4.4 (b9bf913ab32), but this
change was not documented
(cherry picked from commit 0ded580403d470651a963b0915c7a52de627c45e)

Co-authored-by: Romuald Brunet <romuald@chivil.com>

[3.7] bpo-32861: urllib.robotparser fix incomplete __str__ methods. (GH-5711) (GH-6795)

The urllib.robotparser's __str__ representation now includes wildcard
entries and the "Crawl-delay" and "Request-rate" fields.
(cherry picked from commit bd08a0af2d88c590ede762102bd42da3437e9980)

Co-authored-by: Michael Lazar <lazar.michael22@gmail.com>

Remove `ifdef` check for an OpenSSL version (0.9.6) we don't support (GH-6807)

(cherry picked from commit f04224210d93212bd9ad17d67ef5e1c70171a13e)

Co-authored-by: Alex Gaynor <alex.gaynor@gmail.com>

bpo-33494: Change dataclasses.Fields repr to use the repr of each of its members (GH-6798)

(cherry picked from commit 2473eea65d592a80a5362a00362738a33196aba1)

Co-authored-by: Eric V. Smith <ericvsmith@users.noreply.github.com>

bpo-22069: Update TextIO documentation (GH-6609)

Clarify that flush is implied when the call to write contains a newline character.
(cherry picked from commit 7ffd4c58fae08b29259eebd6cbcd2287820b14e8)

Co-authored-by: Elena Oat <oat.elena@gmail.com>

bpo-32601: Let test_expanduser use the same user if no others found. (GH-5246)

This happens in the NixOS build sandbox, for example, where the only
other user is nobody with home directory /.
(cherry picked from commit 5c0d462689e1a69537eaeba6ab94e3ff3524fc31)

Co-authored-by: Anders Kaseorg <andersk@mit.edu>

[3.7] bpo-33488: Satisfy markdownlint for the pull request template. (GH-6786)

./.github/PULL_REQUEST_TEMPLATE.md:8: MD031 Fenced code blocks should be
surrounded by blank lines
./.github/PULL_REQUEST_TEMPLATE.md:10: MD031 Fenced code blocks should
be surrounded by blank lines
./.github/PULL_REQUEST_TEMPLATE.md:19: MD031 Fenced code blocks should
be surrounded by blank lines
./.github/PULL_REQUEST_TEMPLATE.md:21: MD031 Fenced code blocks should
be surrounded by blank lines.
(cherry picked from commit 5cd22cf2097a6dd209999cf97858d54564a3be87)

Co-authored-by: Eitan Adler <grimreaper@users.noreply.github.com>

bpo-28055: Fix unaligned accesses in siphash24(). (GH-6123)

The hash implementation casts the input pointer to uint64_t* and directly reads
from this, which may cause unaligned accesses. Use memcpy() instead so this code
will not crash with SIGBUS on sparc.

https://bugs.gentoo.org/show_bug.cgi?id=636400
(cherry picked from commit 1e2ec8a996daec65d8d5a3d43b66a9909c6d0653)

Co-authored-by: Rolf Eike Beer <eike@sf-mail.de>

bpo-33455: Pass os.environ in test_posix::test_specify_environment. (GH-6753)

Pass os.environ's copy to new process created at test_posix:
test_specify_environment. Otherwise important variables such as
LD_LIBRARY_PATH are not set and the child process might not work at all
in an environment where such variables are required for Python to function.
(cherry picked from commit 7ec8f28656ea9d84048e9b5655375c6a74a59f53)

Co-authored-by: Miro Hrončok <miro@hroncok.cz>

Fix a bug in Generic.__new__ (GH-6758)

(cherry picked from commit b551e9f0ff25018a5606465003e2c51c04f693a3)

Co-authored-by: Ivan Levkivskyi <levkivskyi@gmail.com>

bpo-26701: Tweak the documentation for special methods in int(). (GH-6741)

(cherry picked from commit df00f048250b9a07195b0e3b1c5c0161fdcc9db8)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

bpo-13525: Fix incorrect encoding name in the tutorial example. (GH-6738)

(cherry picked from commit ddb6215a55b0218b621d5cb755e9dfac8dab231a)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

Fix superfluous if in documentation. (GH-6728)

(cherry picked from commit b3c369861b22268dac003eb995951726c972e5ee)

Co-authored-by: Julien Palard <julien@palard.fr>

Fix typo in __mul__ and __rmul__ docstring (GH-6674)

(cherry picked from commit 0904f766e116c269675317e11368a4d29eef0bc6)

Co-authored-by: Grant Jenks <grant.jenks@gmail.com>

closes bpo-33445: fail properly in test_cprofile() (GH-6727)

(cherry picked from commit ac9240b9be31d073d1b2e50ce53481ff0fc9ed23)

Co-authored-by: jdemeyer <jdemeyer@cage.ugent.be>

bpo-28556: Minor fixes for typing module (GH-6732)

This also fixes https://bugs.python.org/issue33420
(cherry picked from commit 43d12a6bd82bd09ac189069fe1eb40cdbc10a58c)

Co-authored-by: Ivan Levkivskyi <levkivskyi@gmail.com>

bpo-32717: Document PEP 560 (GH-6726)

(cherry picked from commit bd5f96581bf23f6d05fc106996428a8043b6b084)

Co-authored-by: Ivan Levkivskyi <levkivskyi@gmail.com>

[3.7] bpo-20087: Update locale alias mapping with glibc 2.27 supported locales. (GH-6708) (GH-6713)

(cherry picked from commit cedc9b74202d8c1ae39bca261cbb45d42ed54d45)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

bpo-33422: Fix quotation marks getting deleted when looking up byte/string literals on pydoc. (GH-6701)

Also update the list of string prefixes.
(cherry picked from commit b2043bbe6034b53f5ad337887f4741b74b70b00d)

Co-authored-by: Andrés Delfino <adelfino@gmail.com>

bpo-33391: Fix refleak in set_symmetric_difference (GH-6670)

(cherry picked from commit 491bbedc209fea314a04cb3015da68fb0aa63238)

Co-authored-by: lekma <lekmalek@gmail.com>

bump to 3.7.0b4+

3.7.0b4

Enable the verbose build for extension modules with GNU make (GH-6659) (#6662)

(cherry picked from commit 10f715d71218ece737f990fa55027b8e1120cc3a)

Co-authored-by: Matthias Klose <doko42@users.noreply.github.com>

bpo-33393: Update config.guess and config.sub files (GH-6658) (#6661)

(cherry picked from commit 7e3545c70cdecd86ffa8fcbffd79b4f78560679f)

Co-authored-by: Matthias Klose <doko42@users.noreply.github.com>

Mitigate macOS race condition in installer build (GH-6686) (GH-6687)

(cherry picked from commit fc6aa28bfd0502d994cec30bd3679b7def3be2af)

Co-authored-by: Ned Deily <nad@python.org>

bpo-33290: Have macOS installer remove "pip" alias (GH-6683) (GH-6684)

Currently, "pip3 install --upgrade pip" unconditionally installs a
"pip" alias even for Python 3.  If a user has an existing Python 3.x
installed from a python.org macOS installer and then subsequently
manually updates to a new version of pip, there may now be a stray
"pip" alias in the Python 3.x framework bin directory which can cause
confusion if the user has both a Python 2.7 and 3.x installed;
if the Python 3.x fw bin directory appears early on $PATH, "pip"
might invoke the pip3 for the Python 3.x rather than the pip for
Python 2.7.  To try to mitigate this, the macOS installer script
for the ensurepip option will unconditionally remove "pip" from
the 3.x framework bin directory being updated / installed.  (The
ambiguity can be avoided by using "pythonx.y -m pip".)
(cherry picked from commit 0dd80709b5dc03756e7f4510761ae60236bb9f6d)

Co-authored-by: Ned Deily <nad@python.org>

bpo-33281: NEWS and ACK (GH-6681) (GH-6682)

(cherry picked from commit 69a013ec189f93a0dea97cfdbb3adc348648a666)

Co-authored-by: Ned Deily <nad@python.org>

bpo-33281:  Fix ctypes.util.find_library regression on macOS (GH-6625) (GH-6680)

(cherry picked from commit d06d345f04b3f7e5b318df69b1d179328a64ca9c)

Co-authored-by: Ray Donnelly <mingw.android@gmail.com>

bpo-33377: add triplets for mips-r6 and riscv (GH-6655) (GH-6660)

(cherry picked from commit ddbe976964933cb943c6383a776e800cc7e0f47d)

Co-authored-by: Matthias Klose <doko42@users.noreply.github.com>

bpo-20104: Improve error handling and fix a reference leak in os.posix_spawn(). (GH-6332)

(cherry picked from commit ef347535f289baad22c0601e12a36b2dcd155c3a)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

bpo-31908: Fix output of cover files for trace module command-line tool. (GH-4205)

Previously emitted cover files only when --missing option was used.
(cherry picked from commit 47ab15470d72367694d7758004067313ae022f0e)

Co-authored-by: Michael Selik <mike@selik.org>

bpo-33352: Skip test_regrtest test if rt.bat does not exist (GH-6654) (#6656)

(cherry picked from commit c3b7a6dfb9c7e69093c9fe78ab587e14743e5152)

Co-authored-by: Andrés Delfino <adelfino@gmail.com>

bpo-33254: do not return an empty list when asking for the contents of a namespace package (GH-6467)

(cherry picked from commit 3ab9365dca8438f89b2060cd3eebe00606133dc4)

Co-authored-by: Brett Cannon <brettcannon@users.noreply.github.com>

bpo-21474: Update IDLE word/identifier definition from ascii to unicode. (GH-6643)

In text and entry boxes, this affects selection by double-click,
movement left/right by control-left/right, and deletion left/right
by control-BACKSPACE/DEL.
(cherry picked from commit 5ff3a161c8a6b525c5e5b3e36e9c43f5a95bda60)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

bpo-33256: Replace angle brackets around python object repr to display it in html (GH-6442)

(cherry picked from commit 7d68bfa82654ba01d860b8a772ff63bf0bd183ee)

Co-authored-by: sblondon <sblondon@users.noreply.github.com>

bpo-32362: Fix references to non-existent multiprocessing.Connection() (GH-6223)

(cherry picked from commit 9f3535c9cde8813ce631d6ebe4d790682f594828)

Co-authored-by: Bo Bayles <bbayles@gmail.com>

bpo-31026: Fix test_dbm if dbm.ndbm is build with Berkeley DB. (GH-6632)

(cherry picked from commit 70af06cdc4e8fbee0b9d7d46bdc193097d4bc71f)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

[3.7] bpo-33383: Fix crash in get() of the dbm.ndbm database object. (GH-6630) (GH-6631)

(cherry picked from commit 2e38cc39330bd7f3003652869b644110a97a78d8)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

bpo-33378: Add Korean to the language switcher. (GH-6627)

(cherry picked from commit 577948329976985ea9bef23d9a6c3dd7108211bf)

Co-authored-by: Dong-hee Na <donghee.na92@gmail.com>

Change "non-local state" to "content-local state". (GH-6617)

The wording here seems wrong, as per https://bugs.python.org/msg315792
(cherry picked from commit e022bbc169ca1428dc3017187012de17ce6e0bc7)

Co-authored-by: Tom Christie <tom@tomchristie.com>

[3.7] bpo-33363: raise SyntaxError for async for/with outside async functions (GH-6616). (GH-6619)

bpo-33358: Fix test_embed.test_pre_initialization_sys_options (GH-6612)

Fix test_embed.test_pre_initialization_sys_options() when building with --enable-shared
(cherry picked from commit 4114846265536344538ae44cb8ffd8ce2903faf7)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

bpo-33330: Improve error handling in PyImport_Cleanup(). (GH-6564)

(cherry picked from commit e9d9494d6b2a5e0c2d48d22c7f0d5e95504b4f7e)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

bpo-33280: Reorganize external Tcl/Tk references. (GH-6473)

(cherry picked from commit 67a8f4fed3169e1b8c947c10f6e06863e399ae32)

Co-authored-by: Andrés Delfino <34587441+andresdelfino@users.noreply.github.com>

bpo-33314: Fix rendering issues in the documentation for the os module (GH-6525) (GH-6597)

(cherry picked from commit d6ef6db9ff780efb2cd502a54ca208afbe84af9c)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

Mention both relevant PEPs in function annotations tutorial (GH-6304)

Patch by Neeraj Badlani.
(cherry picked from commit 643ff711faf417fc3428897dc7d36250ad2cb0e5)

Co-authored-by: Neeraj Badlani <neerajbadlani@gmail.com>

bpo-33128 Fix duplicated call to importlib._install_external_importers  (GH-6273)

External importers were being added in both phases of the import
system initialisation.

They're only supposed to be added in the second phase, after the
import machinery has been appropriately configured.
(cherry picked from commit 0977091dca59709864b14cfc129388f1f0de7bf7)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

bpo-33329: Fix multiprocessing regression on newer glibcs (GH-6575) (GH-6579)

Starting with glibc 2.27.9000-xxx, sigaddset() can return EINVAL for some
reserved signal numbers between 1 and NSIG.  The `range(1, NSIG)` idiom
is commonly used to select all signals for blocking with `pthread_sigmask`.
So we ignore the sigaddset() return value until we expose sigfillset()
to provide a better idiom.
(cherry picked from commit 25038ecfb665bef641abf8cb61afff7505b0e008)

Co-authored-by: Antoine Pitrou <pitrou@free.fr>

bpo-991266: Fix quoting of Comment attribute of SimpleCookie (GH-6555)

(cherry picked from commit d5a2377c3d70e4143bcbee4a765b3434e21f683a)

Co-authored-by: Berker Peksag <berker.peksag@gmail.com>

bpo-33297: Mention Pillow to work with more image formats. (GH-6505)

Also update PIL doc references to Pillow.
(cherry picked from commit b81ca28b378c8b29204a37f8bd433a3379f53f7d)

Co-authored-by: Andrés Delfino <34587441+andresdelfino@users.noreply.github.com>

Clarify that __path__ can't be just any value (GH-6554)

(cherry picked from commit 441d945eb33f8dc130b268ebfa11315b98a2433c)

Co-authored-by: Brett Cannon <brettcannon@users.noreply.github.com>

Spelling fixes to docs, docstrings, and comments (GH-6374)

(cherry picked from commit 61f82e0e337f971da57f8f513abfe693edf95aa5)

Co-authored-by: Ville Skyttä <ville.skytta@iki.fi>

bpo-33131: Upgrade ensurepip to bundle pip 10.0.1 (GH-6546)

Upgrade ensurepip to bundle pip 10.0.1
(cherry picked from commit 0399cf9b5e370516e3d0aed6a63ff74aff5eadb5)

Co-authored-by: Paul Moore <p.f.moore@gmail.com>

bpo-33312: update Tools/gdb/libpython.py to match. (GH-6549)

(cherry picked from commit 53f67d401df40486fd0fb8fbcf9da725cd37290c)

bpo-33312: Fix clang ubsan out of bounds warnings in dict. (GH-6537) (GH-6543)

Fix clang ubsan (undefined behavior sanitizer) warnings in dictobject.c by
adjusting how the internal struct _dictkeysobject shared keys structure is
declared.

This remains ABI compatible.  We get rid of the union at the end of the
struct being used for conveinence to avoid typecasting in favor of char[]
variable length array at the end of a struct. This is known to clang to be
used for variable sized objects and will not cause an undefined behavior
problem.  Similarly, char arrays do not have strict aliasing undefined
behavior when cast.

PEP-007 does not currently list variable length arrays (VLAs) as allowed
in our subset of C99.  If this turns out to be a problem, the fix to this is
to change the char `dk_indices[]` into `dk_indices[1]` and restore the
three size computation subtractions this change removes:
  `- Py_MEMBER_SIZE(PyDictKeysObject, dk_indices)`

If this works as is I'll make a separate PR to update PEP-007.
(cherry picked from commit 397f1b28c4a12e3b3ed59a89599eabc457412649)

bpo-32232: by default, Setup modules are no longer built with -DPy_BUILD_CORE (GH-6489)

Setup modules are no longer built with -DPy_BUILD_CORE by default,
as using that flag may now require including additional internal-only header files.

Instead, only the modules that specifically need it use that setting.
(cherry picked from commit 063db62aab4041ac47798e7e48b27b2f2bef21c5)

Co-authored-by: xdegaye <xdegaye@gmail.com>

Clean up the readme text around PGO a bit. (GH-6538) (GH-6539)

(cherry picked from commit b87c1c92fc93c5733cd3d8606ab2301ca6ba208f)

Co-authored-by: Gregory P. Smith <greg@krypto.org>

bpo-33189: pygettext.py now accepts only literal strings (GH-6364)

as docstrings and translatable strings, and rejects
bytes literals and f-string expressions.
(cherry picked from commit 69524821a87251b7aee966f6e46b3810ff5aaa64)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

Update What's new in 3.7 to reference preadv, pwritev and posix_spawn (GH-6524)

(cherry picked from commit 9009f3e389123c5f94d4d12f1f51b0a88531c37c)

Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>

bpo-33308: Fix a crash in the parser module when convert an ST object. (GH-6519)

Converting with line_info=False and col_info=True crashed before.
(cherry picked from commit e5362eaa75a154c6e91c5b1c47719d0a0f5ca48b)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

bpo-31583: Fix 2to3 for using with --add-suffix option (GH-3758) (#6528)

(cherry picked from commit e3a523a0fa16aec880880928303bfcbd1fb74bc2)

Co-authored-by: Denis Osipov <osipov_d@list.ru>