Merged from trunk -r13339:13345

   Merged from trunk -r13339:13345

   | 13340   | Create the myreporoot variable from portdir_overlay before   |
   | zmedico | doing realpath(portdir_overlay) since otherwise symlinks     |
   |         | break the assumptions. Thanks to Thomas Sachau <tommy@g.o>   |
   |         | for reporting and troubleshooting.                           |

   | 13342   | Make portage.bsd_chflags correspond to FEATURES=chflags so   |
   | zmedico | that it can be used for related conditionals in shell code.  |

   | 13343   | Convert portage.bsd_chflags into a class with chflags() and  |
   | zmedico | lchflags() class methods.                                    |

   | 13344   | Split out an action_uninstall() function to handle argument  |
   | zmedico | validation for clean, depclean, prune, and unmerge actions.  |

   | 13345   | Add support in action_uninstall() for file -> package        |
   | zmedico | lookup.                                                      |

svn path=/main/branches/prefix/; revision=13346