Merged from trunk -r14186:14191

   Merged from trunk -r14186:14191

   | 14187   | Fix usage of VDB_PATH                                        |
   | grobian |                                                              |

   | 14188   | consistently use CACHE_PATH with target_root, this commit    |
   | grobian | needs a separate soon to be done commit of                   |
   |         | pym/portage/const.py to work correctly                       |

   | 14189   | PRIVATE_PATH has no leading slash (like all other uses of    |
   | grobian | this var assume)                                             |

   | 14190   | add note that this file does not seem to deal with ROOT at   |
   | grobian | all                                                          |

   | 14191   | DEPRECATED_PROFILE_FILE is derived from PROFILE_PATH which   |
   | grobian | has no leading slash                                         |

svn path=/main/branches/prefix/; revision=14195