Merged from trunk -r14388:14396

   Merged from trunk -r14388:14396

   | 14389    | Fix stack_dicts() to always return a dict.                  |
   | zmedico  |                                                             |

   | 14390    | Make SlotDict use call self.iteritems() where appropriate   |
   | zmedico  | since it implements that method even when running in python |
   |          | 3.x.                                                        |

   | 14391    | Optimize SlotDict.iteritems() a little.                     |
   | zmedico  |                                                             |

   | 14392    | Optimize vardbapi.getpath(). Thanks to Marat Radchenko      |
   | zmedico  | <marat@slonopotamus.org> for this patch.                    |

   | 14393    | Bug #285979 - Replace references to CDEPEND with UNUSED_00, |
   | zmedico  | to make it clear that this key really is unused.            |

   | 14394    | Fix formatting of size of downloads with Python 3.          |
   | arfrever |                                                             |

   | 14395    | Fix "TypeError: object of type 'filter' has no len()".      |
   | arfrever |                                                             |

   | 14396    | Bug #286118 - Fix dbapi.move_ent() methods so they don't    |
   | zmedico  | assume Atom instances can be concatenated with strings      |
   |          | (even though they can now, it's not really a good           |
   |          | assumption).                                                |

svn path=/main/branches/prefix/; revision=14406