Merged from trunk 9094:9118

   Merged from trunk 9094:9118

   | 9096    | Move XARGS initialization from portage.data to               |
   | zmedico | isolated-functions.sh.                                       |

   | 9097    | Move XARGS initialization from portage.data to               |
   | zmedico | isolated-functions.sh.                                       |

   | 9099    | Remove redundant lchown() compatibility code since the       |
   | zmedico | getattr(os, "lchown", None) call already handles it.         |

   | 9100    | Simplify the userland detection code in portage.data and add |
   | zmedico | a bash version of it to isolated-functions.sh.               |

   | 9101    | Add back support for silent definition of the dummy lchown() |
   | zmedico | function when ostype == Darwin.                              |

   | 9103    | Remove redundant USERLAND sanity check code from doebuild()  |
   | zmedico | since it's handled in isolated-functions.sh now.             |

   | 9105    | Make the global counter file correspond to the total number  |
   | zmedico | of installation actions that have occurred in the history of |
   |         | this package database.                                       |

   | 9107    | Rely on USERLAND since it's automatically generated by       |
   | zmedico | isolated-functions.sh when necessary.                        |

   | 9109    | Document that docinto works for dohtml.                      |
   | zmedico |                                                              |

   | 9111    | Make the ecompressdir vecho output show a leading / on the   |
   | zmedico | directory path. Thanks to armin76.                           |

   | 9112    | Fix handling of leading / charactes some more.               |
   | zmedico |                                                              |

   | 9114    | Add PKGDIR to the config.environ() whitelist so that         |
   | zmedico | people's bashrc's don't break.                               |

   | 9116    | Fix broken Darwin USERLAND detection.                        |
   | zmedico |                                                              |

   | 9117    | Fix USERLAND references to handle Darwin like BSD.           |
   | zmedico |                                                              |

   | 9118    | As suggested by grobian, treat Darwin just like USERLAND=gnu |
   | zmedico | since they seem to be switching commands to gnu anyway.      |

svn path=/main/branches/prefix/; revision=9124