[issue8533] regrtest: use backslashreplace error handler for stdout

[Hirokazu Yamamoto]

Changes by Hirokazu Yamamoto <ocean-city at m2.ccsnet.ne.jp>:


Removed file: http://bugs.python.org/file19170/py3k_also_no_unicode_error_on_direct_test_run.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8533>
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