Merged from trunk -r13346:13350

   Merged from trunk -r13346:13350

   | 13347   | Bug #266211 - Handle ESTALE like ENOENT in fetch and locking |
   | zmedico | code. Thanks to Krzysztof Olędzki <ole+gentoo@ans.pl> for   |
   |         | the initial patch.                                           |

   | 13348   | Bug #265909 - Make emerge display a warning message if any   |
   | zmedico | overlays are ignored due to duplicate profiles/repo_name     |
   |         | entries. The warning can be disabled by setting              |
   |         | PORTAGE_REPO_DUPLICATE_WARN=0 in /etc/make.conf.             |

   | 13349   | Call realpath(repodir) so it's conistent with the value that |
   | zmedico | pordbapi uses. Thanks to Fabian Groffen <grobian@g.o> for    |
   |         | reporting.                                                   |

   | 13350   | Add support in repos.conf to override the "masters" setting  |
   | zmedico | from layout.conf.                                            |

svn path=/main/branches/prefix/; revision=13367