Merged from trunk 9029:9038

   Merged from trunk 9029:9038

   | 9031    | Make vardbapi cache DESCRIPTION and HOMEPAGE in order to     |
   | zmedico | optimize emerge --searchdesc.                                |

   | 9033    | Enhance the portageq match command to list all installed     |
   | zmedico | packages when given an empty string.                         |

   | 9034    | Typo: remove bogus argument.                                 |
   | zmedico |                                                              |

   | 9035    | Implement a `portageq contents ` command that lists all the  |
   | zmedico | files that are installed for a given package, with one file  |
   |         | listed on each line.                                         |

   | 9038    | Add support for --usepkg and --usepkgonly options together   |
   | zmedico | with emerge --search.                                        |

svn path=/main/branches/prefix/; revision=9042