Merged from trunk -r15717:15732

   Merged from trunk -r15717:15732

   | 15720   | Bug #304981 - Remove redundant fetch log removal code which  |
   | zmedico | is already handled by EbuildFetcher.                         |

   | 15721   | Remove fetch log after successful fetch.                     |
   | zmedico |                                                              |

   | 15722   | Unlink log instead of truncate, to avoid leaving empty log   |
   | zmedico | in $PORT_LOGDIR. This reverts bug 304981 (reporting doesn't  |
   |         | use tee like this anymore so he'd prefer the old behavior).  |

   | 15728   | Make _global_updates() silently return if ROOT != "/" and    |
   | zmedico | make fixpackages bail out with an error message in this case |
   |         | which suggests to instead use emaint --fix movebin and/or    |
   |         | moveinst. This prevents useless/ugly global updates messages |
   |         | that flood the terminal when ROOT != "/".                    |

   | 15730   | Add news about splitting the top-level __init__.py.          |
   | zmedico |                                                              |

svn path=/main/branches/prefix/; revision=15738