[issue12073] regrtest: use faulthandler to dump the tracebacks on SIGUSR1

[STINNER Victor]

Changes by STINNER Victor <victor.stinner at haypocalc.com>:


Removed file: http://bugs.python.org/file21995/regrtest_sigusr1.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12073>
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