Merge remote-tracking branch 'remotes/aosp/upstream-2.7' into merge

* remotes/aosp/upstream-2.7: (779 commits)
  [2.7] closes bpo-34661: Fix test_shutil if unzip doesn't support -t. (GH-9267)
  [2.7] closes bpo-34652: Always disable lchmod on Linux. (GH-9242)
  bpo-34649: Add missing NULL checks to _encoded_const() (GH-9225)
  [2.7] bpo-28994: Remove mistakenly backported atexitmodule.c (GH-9214)
  [2.7] Delete old expat comment. (GH-9205)
  [2.7] bpo-34405: Updated to OpenSSL 1.0.2p for Windows builds. (GH-8776) (GH-9202)
  [2.7] bpo-34405: Update to OpenSSL 1.0.2p for macOS installer builds (GH-9191) (GH-9196)
  [2.7] bpo-32502: Discard 64-bit (and other invalid) hardware addresses (GH-9125)
  [2.7] closes bpo-31608: Fix a crash in methods of a subclass of _collections.deque with a bad __new__(). (GH-9179)
  bpo-34625: Update vendorized expat version to 2.2.6. (GH-9150)
  bpo-25083: Python can sometimes create incorrect .pyc files (GH-8449)
  [2.7] Fix misleading mentions of tp_size in comments (GH-9138)
  bpo-23855: Add missing NULL checks for malloc() in _msi.c (GH-9038)
  bpo-25750: fix refcounts in type_getattro() (GH-6118) (GH-9091)
  bpo-26544: Get rid of dependence from distutils in platform. (GH-8356) (GH-8952)
  bpo-34530: Fix distutils find_executable() (GH-9049) (GH-9058)
  bpo-34500: Fix ResourceWarning in difflib.py (GH-8926)
  [2.7] Fix struct sequence glossary entry grammar (GH-9030)
  bpo-34007: Skip traceback tests if the Program Counter is not available. (GH-9018)
  closes bpo-34540: Convert shutil._call_external_zip to use subprocess rather than distutils.spawn. (GH-8985)
  ...

Test: m -j checkbuild
Bug: b/29149404
Change-Id: I7cd7ae8c4a72b3d332d81664d48c2453f527c3b8