Merged from trunk -r13563:13575

   Merged from trunk -r13563:13575

   | 13565   | Fix _lazy_accept_license to discard || from the set of       |
   | zmedico | licenses.                                                    |

   | 13567   | Bug #267104 - When appropriate, advise the user that they    |
   | zmedico | may set FEATURES= -userfetch in order to use remaining       |
   |         | space.                                                       |

   | 13569   | Move PORTAGE_RESTRICT calculation to config.setcpv() (lazy   |
   | zmedico | evaluation) and fix it to work correctly for pre-built       |
   |         | packages.                                                    |

   | 13570   | Enable use() qa checks via PORTAGE_IUSE for all ebuild       |
   | zmedico | phases and for binary packages since it should work fine     |
   |         | now.                                                         |

   | 13573   | In config.setcpv() reuse split USE from built packages       |
   | zmedico | instead of splitting them again.                             |

   | 13575   | Remove unnecessary doebuild_environment() call from          |
   | zmedico | EbuildFetchonly.execute() since PORTAGE_RESTRICT is          |
   |         | calculated by config.setcpv() now.                           |

svn path=/main/branches/prefix/; revision=13593