Merged from trunk -r14368:14378

   Merged from trunk -r14368:14378

   | 14369   | Don't wrap os.statvfs since it requires unicode string args  |
   | zmedico | in py3k.                                                     |

   | 14370   | Fix 'RuntimeError: dictionary changed size during iteration' |
   | zmedico | in _owners_db._populate() with py3k.                         |

   | 14371   | Fix items to prevent infinite recursion.                     |
   | zmedico |                                                              |

   | 14372   | Remove redundant list() since starred expressions work with  |
   | zmedico | iterators.                                                   |

   | 14373   | Fix 'RuntimeError: dictionary changed size during iteration' |
   | zmedico | in bindbapi.aux_update() with py3k.                          |

   | 14374   | Fix 'iteritems' attribute detection to look for 'items'      |
   | zmedico | instead.                                                     |

   | 14375   | Fix another potential 'RuntimeError: dictionary changed size |
   | zmedico | during iteration' exception in _owners_db._populate() for    |
   |         | py3k.                                                        |

   | 14376   | Optimize unicode wrappers. Thanks to Marat Radchenko         |
   | zmedico | <marat@slonopotamus.org> for this patch from bug #276813.    |

   | 14377   | For python 3.x with boolean target, len() results in         |
   | zmedico | TypeError, so make __len__ return 0 or 1 in this case.       |

   | 14378   | Do manual unicode handling (instead of using the wrapped os  |
   | zmedico | module) in portdbapi.findname2(), since it's a hotspot.      |
   |         | Thanks to Marat Radchenko <marat@slonopotamus.org> for the   |
   |         | initial patch.                                               |

svn path=/main/branches/prefix/; revision=14404