use patch context manager instead of decorator because the decorator 'leaks' metadata onto the function

Patch from Thomas Kluyver.

Patch by Claudiu Popa.

Patch by Claudiu Popa.

Patch from Thomas Kluyver.

fully qualified class names of Python implemented classes.

due to possible uninitialized _config_vars.  Original patch by Alex Gaynor.

Issue #21722: The distutils "upload" command now exits with a non-zero return code when uploading fails.
Patch by Martin Dengler.

Issue #21722: The distutils "upload" command now exits with a non-zero return code when uploading fails.
Patch by Martin Dengler.

in order to have the same resolution as pthreads condition variables.
At the same time, it must be large enough to accept 31 bits of
milliseconds, which is the maximum timeout value in the windows API.
A PY_LONG_LONG of microseconds fullfills both requirements.
This closes issue #20737