Merged revisions 87430 via svnmerge from

Merged revisions 87430 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r87430 | r.david.murray | 2010-12-21 16:53:37 -0500 (Tue, 21 Dec 2010) | 9 lines

  #4871: check that zipfile password is bytes, and give useful error message.

  Previously passing a string in as the password would fail either with
  an assertion error or a TypeError with a confusing error message.
  Note that a string can't be accepted since zipfile has no way to
  guess what encoding should be used to turn it into bytes.

  Patch by Victor Stinner.
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