Merged revisions 73788 via svnmerge from

Merged revisions 73788 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r73788 | amaury.forgeotdarc | 2009-07-03 01:08:45 +0200 (ven., 03 juil. 2009) | 6 lines

  #4601: 'make install' did not set the permissions on library directories,
  only root could start IDLE for example.

  Beware that os.path.walk does not translate as is to os.walk!
  the former uses a callback to call on each dir, the latter is a generator...
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