Merged from trunk -r15340:15350

   Merged from trunk -r15340:15350

   | 15341   | Fix dblink._eerror argument where list is required instead   |
   | zmedico | of string.                                                   |

   | 15342   | Remove unnecessary newline in dblink._eerror message.        |
   | zmedico |                                                              |

   | 15343   | Logg errors that occur during binpkg extraction.             |
   | zmedico |                                                              |

   | 15344   | Use os.environ instead of the config.environ(). This solves  |
   | zmedico | binpkg extraction issues with catalyst stage1 due to PATH    |
   |         | being unset and bzip2/tar binaries not being found by bash.  |

   | 15345   | When creating a config instance for ROOT=/ with a clean env, |
   | zmedico | copy PATH and TERM variables, since they may be useful.      |

   | 15346   | Bug #304793 - Update --newuse docs to indicate that this     |
   | zmedico | option also implies --selective.                             |

   | 15347   | Bug #262647 - Explicitly exclude SRC_URI and other           |
   | zmedico | potentially long metadata variables from config.environ()    |
   |         | exports, to avoid potential E2BIG errors from execve calls.  |

   | 15348   | Evaluate USE conditionals when writing vdb entries after     |
   | zmedico | src_install.                                                 |

   | 15349   | After src_install, save fewer variables when writing the vdb |
   | zmedico | entry for a virtual package.                                 |

   | 15350   | Don't save SRC_URI as a vdb entry since it's pretty useless  |
   | zmedico | and it's available in environment.bz2 anyway.                |

svn path=/main/branches/prefix/; revision=15384