Merged from trunk -r13200:13232

   Merged from trunk -r13200:13232

   | 13201   | For consistency in output with other helpers, check for file |
   | zmedico | existence before calling install.                            |

   | 13202   | When copying symlink targets to temp files, use a private    |
   | zmedico | temp dir inside $T instead of using $T directly.             |

   | 13222   | In dyn_unpack(), don't force a new unpack when the ebuild    |
   | zmedico | mtime is newer than $WORKDIR, since that may be too touchy.  |
   |         | The user can easily call the clean phase explicitly if they  |
   |         | really want it.                                              |

   | 13224   | In portdbapi.findname2(), move some of the path joining out  |
   | zmedico | of the loop.                                                 |

   | 13226   | Inside config.setcpv(), don't clear out                      |
   | zmedico | self.configdict['pkg'] entirely since some values need to be |
   |         | reused sometimes.                                            |

   | 13227   | In config.setcpv(), make sure the current args are really    |
   | zmedico | identical to the previous args before returning early.       |

   | 13230   | Fix typo in comment.                                         |
   | zmedico |                                                              |

   | 13232   | Make the argument hash in config.setcpv() a little stronger. |
   | zmedico |                                                              |

svn path=/main/branches/prefix/; revision=13236