Sync python3-stdlib-extensions 3.7.4-3 (main) from Debian unstable (main)

[Anders Kaseorg]

Please sync python3-stdlib-extensions 3.7.4-3 (main) from Debian unstable (main)

I expect this to fix the inability to create a virtualenv with
python3.8:

$ virtualenv -p python3.8 /tmp/env
[…]
  File "/usr/lib/python3.8/distutils/sysconfig.py", line 461, in _init_posix
    _temp = __import__(name, globals(), locals(), ['build_time_vars'], 0)
ModuleNotFoundError: No module named '_sysconfigdata__linux_x86_64-linux-gnu'

Explanation of the Ubuntu delta and why it can be dropped:
  * Merge with Debian; remaining changes:
    - Add 3.8 extensions and modules for 3.8.0~a3.

These changes were added to the Debian package.

Changelog entries since current eoan version 3.7.3-1ubuntu1:

python3-stdlib-extensions (3.7.4-3) unstable; urgency=medium

  * Don't encode the MACHDEP into the _sysconfigdata file name.
  * Tighten build dependency on python3.8.

 -- Matthias Klose <email address hidden> Thu, 11 Jul 2019 15:13:19 +0200

python3-stdlib-extensions (3.7.4-1) unstable; urgency=medium

  * Update 3.7 extensions and modules to the 3.7.4 release.
  * Silent some lintian warnings.
  * Bump standards version.

 -- Matthias Klose <email address hidden> Tue, 09 Jul 2019 07:59:11 +0200

python3-stdlib-extensions (3.7.4~rc2-1) unstable; urgency=medium

  * Update 3.7 extensions and modules to 3.7.4 release candidate 2.
  * Add 3.8 extensions and modules for 3.8.0~b2.
  * Refresh patches.

 -- Matthias Klose <email address hidden> Sat, 06 Jul 2019 12:30:36 +0200

[Matthias Klose (doko)]

done