Merged from trunk -r15285:15292

   Merged from trunk -r15285:15292

   | 15286   | fix: python dbm module doesn't accept unicode as key         |
   | volkmar |                                                              |

   | 15287   | Define __slots__ in all classes.                             |
   | zmedico |                                                              |

   | 15288   | In config._expandLicenseToken(), make sure traversed_groups  |
   | zmedico | is only initialized when appropriate.                        |

   | 15289   | Fix concatenation of list + tuple in                         |
   | zmedico | Manifest._createManifestEntries().                           |

   | 15290   | Don't generate DeprecationWarning for portdbapi arguments.   |
   | zmedico | Wait until new portdbapi constructor is in stable portage    |
   |         | first.                                                       |

   | 15291   | fix flat_list cache backend looks like it was outdated wrt.  |
   | volkmar | template cache backend                                       |

   | 15292   | Show a DeprecationWarning if the deprecated pordbapi         |
   | zmedico | constructor parameter is used incorrectly.                   |

svn path=/main/branches/prefix/; revision=15301