It's sometimes hard to check quickly if tests succeeded, failed or something
bad happened. I added a final "Result: xxx" line which summarizes all outputs
into a single line, written at the end (it should always be the last line of
the output).

* Memove -t option of ctags. The option was kept for backward compatibility,
  but it was completly removed recently. Patch written by Stéphane Wirtel.
* Set locale to C to call sort. vim expects that the tags file is sorted using
  english collation, so it fails if the locale is french for example. Use
  LC_ALL=C to force english sorting order. .

vim expects that the tags file is sorted using english collation, so it fails
if the locale is french for example. Use LC_ALL=C to force english sorting
order. Issue #27726.

The option was kept for backward compatibility, but it was completly removed
recently. Patch written by Stéphane Wirtel.

If Popen.communicate() raises an exception, kill the child process to not leave
a running child process in background and maybe create a zombi process.

This change fixes a ResourceWarning in Python 3.6 when unit tests are
interrupted by CTRL+c.

Use milliseconds and minutes units, not only seconds.

Display the top 10 slowest tests.

Thanks to optparse, --slow syntax still works ;-)

rearrange methodcaller_new so that the main error case does not cause uninitialized memory usage (closes #27783)

Issue #27128, #18295: replace int type with Py_ssize_t for index variables used
for positional arguments. It should help to avoid integer overflow and help to
emit better machine code for "i++" (no trap needed for overflow).

Make also the total_args variable constant.

* Add comments
* Add empty lines for readability
* PEP 7 style for if block
* Remove useless assert(globals != NULL); (globals is tested a few lines
  before)

Merge dev_urandom_python() and dev_urandom_noraise() functions to reduce code
duplication.

Modify py_getrandom() to not call PyErr_CheckSignals() if raise is zero.
_PyRandom_Init() is called very early in the Python initialization, so it's
safer to not call PyErr_CheckSignals().

* Add pyurandom() helper function to factorize the code
* don't call Py_FatalError() in helper functions, but only in _PyRandom_Init()
  if pyurandom() failed, to uniformize the code

_is_data_descriptor().

_is_data_descriptor().