[issue26486] Backport some tests to 2.7

[Martin Panter]

Martin Panter added the comment:

I suspect this change is causing some buildbot failures (and failures on my computer). E.g. <http://buildbot.python.org/all/builders/AMD64%20FreeBSD%2010.0%202.7/builds/1274>.

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FAIL: test_int_pickling_efficiency (test.test_cpickle.cPickleTests)
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Traceback (most recent call last):
  File "/media/disk/home/proj/python/cpython/Lib/test/pickletester.py", line 1509, in test_int_pickling_efficiency
    self.assertEqual(sorted(sizes), sizes)
AssertionError: Lists differ: [5, 5, 6, 6, 8, 8, 8, 14, 14, ... != [5, 5, 6, 6, 8, 8, 8, 16, 18, ...

First differing element 7:
14
16

- [5, 5, 6, 6, 8, 8, 8, 14, 14, 16, 18, 19, 21, 22, 24]
+ [5, 5, 6, 6, 8, 8, 8, 16, 18, 19, 21, 22, 24, 14, 14]

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nosy: +martin.panter
status: closed -> open

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26486>
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