Merged from trunk -r12520:12524

   Merged from trunk -r12520:12524

   | 12521   | Bug #255101 - Fix 'Permission denied' error handling in      |
   | zmedico | NewsManager.getUnreadItems(). If there's no permission to    |
   |         | lock the unread file, skip the lock and try to read the file |
   |         | anyway.                                                      |

   | 12522   | Revert chown behavior change from the previous commit, so    |
   | zmedico | that chown will not be called on a pre-existing file.        |

   | 12523   | Identify which package has unused local USE descriptions, in |
   | zmedico | case more than one package is being scanned. Thanks to       |
   |         | Thomas Sachau <tommy@g.o> for reporting.                     |

   | 12524   | Fix false positive in the 'unused local USE-description'     |
   | zmedico | warning. Thanks to Alexis Ballier <aballier@g.o> for         |
   |         | reporting.                                                   |

svn path=/main/branches/prefix/; revision=12527