Merged from trunk 7918:7951

   Merged from trunk 7918:7951

   | 7919    | In portdbapi.aux_get(), simplify code by using string        |
   | zmedico | manipulation instead of int conversion to manipulate         |
   |         | negative EAPI when deciding whether or not regen is          |
   |         | necessary.                                                   |

   | 7942    | Make the EbuildQuote check ignore lines beginning with local |
   | zmedico | or export builtins since unquoted assignments are okay       |
   |         | there.                                                       |

   | 7944    | Bug #194764 - All the match* functions can raise a           |
   | zmedico | ValueError if cpv_expand() receives an ambiguous atom.       |
   |         | Therefore, move the ValueError handling code out of match()  |
   |         | and use it to handle all such errors when appropriate.       |

   | 7946    | copy of gentoolkit r451                                      |
   | genone  |                                                              |

   | 7947    | add TODO list for portage-2.2                                |
   | genone  |                                                              |

   | 7948    | ignore missing files                                         |
   | genone  |                                                              |

   | 7949    | Document the EAPI variable.                                  |
   | zmedico |                                                              |

   | 7950    | Fix spelling of backward.                                    |
   | zmedico |                                                              |

   | 7951    | Documnet EAPI in the MASKED PACKAGES section.                |
   | zmedico |                                                              |

svn path=/main/branches/prefix/; revision=7960