Merged from trunk -r14724:14735

   Merged from trunk -r14724:14735

   | 14725   | Don't set mtime on downloaded metadata.dtd when using        |
   | zmedico | python3, since the rfc822.parsedate() function is not        |
   |         | available. Thanks to Arfrever for reporting.                 |

   | 14728   | Use calendar.timegm instead of time.mktime, for correct      |
   | zmedico | timezone handling.                                           |

   | 14729   | Add a parsedate() function which emulates                    |
   | zmedico | rfc822.parsedate(), since python3 doesn't have it.           |

   | 14730   | Add -R as a shortcut for --depclean. Thanks to Jonathan      |
   | zmedico | Callen <abcd@g.o> for the suggestion.                        |

   | 14731   | Take the -c option and make it mean --depclean instead of    |
   | zmedico | --clean, since --clean is pretty useless anyway.             |

   | 14732   | Add a reference to bug #141118 inside                        |
   | zmedico | _expand_new_virtuals().                                      |

   | 14733   | Revert the workaround for bug #288863. This will require a   |
   | zmedico | dependency on >=sys-apps/sandbox-2.2.                        |

   | 14734   | Bug #290625 - Manually encode output to stdout in python3,   |
   | zmedico | in order to avoid potential UnicodeEncodeError exceptions.   |

   | 14735   | Bug #290428 - Update mtime of /var/db/pkg and category       |
   | zmedico | subdirectories when stuff inside is modified, so that        |
   |         | consumers can use directory mtimes to validate caches.       |

svn path=/main/branches/prefix/; revision=14743