Merged from trunk 9063:9094

   Merged from trunk 9063:9094

   | 9064    | Fixes for logic related to FEATURES=test to USE=test         |
   | zmedico | mapping: * Add EBUILD_FORCE_TEST to the environment          |
   |         | whitelist and filter it from the saved environment in        |
   |         | save_ebuild_env(). * Tweak logic inside the ebuild command   |
   |         | and config.regenerate() so that EBUILD_FORCE_TEST works even |
   |         | in odd cases like when USE=test is masked. * Only make       |
   |         | FEATURES=test map to USE=test when "test" is actually in     |
   |         | IUSE. * Remove USE=test from the set of implicit IUSE so     |
   |         | that useq() calls in ebuild.sh properly generate a QA Notice |
   |         | when "test" is missing from IUSE.                            |

   | 9065    | Show the EBUILD_FORCE_TEST "Forcing test" message even when  |
   | zmedico | "test" is not in IUSE.                                       |

   | 9066    | In action_regen(), use writemsg() to send error messages to  |
   | zmedico | stderr.                                                      |

   | 9078    | Just ignore it when the global counter file does not match   |
   | zmedico | the highest installed COUNTER since it's normal for them to  |
   |         | differ in some cases. For example, the global counter file   |
   |         | will contain a higher value if the user merges a package and |
   |         | then immediately unmerges it (unmerge does not update the    |
   |         | global counter file, but merge does).                        |

   | 9080    | Make dep_expand() stop relying on having a categories list:  |
   | zmedico | * Create and use a dbapi.categories property that is         |
   |         | automatically generated from dbapi.cp_all(). * Make mutable  |
   |         | dbapi instances delete the invalidate the cached categories  |
   |         | when they need to be regenerated.                            |

   | 9081    | Make key_expand() use dbapi.categories.                      |
   | zmedico |                                                              |

   | 9083    | Make the FEATURES=sfperms loops safe for whitespace in paths |
   | zmedico | by using find -print0 | while read -d $'\0'.                 |

   | 9085    | Bug #202697 - Add / to the default initial SANDBOX_READ in   |
   | zmedico | order to avoid a situation where attempts to read arbitrary  |
   |         | files trigger sandbox violations.                            |

   | 9087    | Bug #121584 - Make the automatic USERLAND detection code     |
   | zmedico | recognize GNU/kFreeBSD.                                      |

   | 9089    | Make the ARCH and USERLAND sanity check use the autodetected |
   | zmedico | USERLAND from the portage.data module if necessary.          |

   | 9090    | Make doebuild() check XARGS together with ARCH and USERLAND. |
   | zmedico |                                                              |

   | 9092    | * Initialize dbapi._categories = None so that we can compare |
   | zmedico | with None instead of using hasattr. * Remove unwanted        |
   |         | self._categories initialization from the portdbapi           |
   |         | constructor.                                                 |

   | 9094    | Add support for showing binary package file sizes in emerge  |
   | zmedico | --search output.                                             |

svn path=/main/branches/prefix/; revision=9123