[issue31160] Enhance support.reap_children()

[Michael Felt]

Michael Felt <aixtools at felt.demon.nl> added the comment:

With PR19263 The AIX bots are now red.

======================================================================
ERROR: test_input_no_stdout_fileno (test.test_builtin.PtyTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/shager/cpython-buildarea/3.x.edelsohn-aix-ppc64/build/Lib/test/test_builtin.py", line 1952, in test_input_no_stdout_fileno
    lines = self.run_child(child, b"quux\r")
  File "/home/shager/cpython-buildarea/3.x.edelsohn-aix-ppc64/build/Lib/test/test_builtin.py", line 1898, in run_child
    support.wait_process(pid, exitcode=0)
  File "/home/shager/cpython-buildarea/3.x.edelsohn-aix-ppc64/build/Lib/test/support/__init__.py", line 3432, in wait_process
    os.kill(pid, signal.SIGKILL)
NameError: name 'signal' is not defined
----------------------------------------------------------------------
Ran 101 tests in 30.348s
FAILED (errors=1, skipped=7)
1 test failed again:
    test_builtin

+++++++++++++++
The Buildbot has detected a failed build on builder PPC64 AIX 3.x while building python/cpython.
Full details are available at:
    https://buildbot.python.org/all/#builders/227/builds/565

Buildbot URL: https://buildbot.python.org/all/

Worker for this Build: edelsohn-aix-ppc64
Worker for this Build: aixtools-aix-power6

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nosy: +Michael.Felt

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