Fix urllib.request.build_opener mocking in test_distutils (should fix some random buildbot failures)

Issue #18879: When a method is looked up on a temporary file, avoid closing the file before the method is possibly called.

from X.org distribution using makelocalealias.py.

locale encodings with hyphens.

ValueError if num is negative (instead of raising a SystemError).

(wrong type).

quotechar fields.  Original patch by Vajrasky Kok.

Patch by Serhiy Storchaka.

Original patch by Simon Sapin.

sys.getwindowsversion() and ossaudiodev.setparameters().
Reported by Ned Batchelder.

busy/slow buildbot

EWOULDBLOCK on Windows or VMs hosted on Windows.

acceptable outcomes: success or RuntimeError. Without being able to
actually hear whether a sound was played, either one could be right, but
any other error would be a failure.

* splitunc() no more return illegal result for paths with redundant slashes.
* splitunc() now correctly processes the 'İ' character
  (U+0130, LATIN CAPITAL LETTER I WITH DOT ABOVE).
* Deprecation warnings now emitted for every use of splitunc().
* Added tests for splitunc().

(U+0130, LATIN CAPITAL LETTER I WITH DOT ABOVE).

Patch by Vajrasky Kok.