Merged from trunk -r11982:12004

   Merged from trunk -r11982:12004

   | 11984    | Bug #139134 - Make the flat_hash and metadata modules write |
   | zmedico  | the _mtime_ field inside the file instead of mangling the   |
   |          | mtime of the cache entry file. Also, fix                    |
   |          | FsBased._ensure_access() to properly skip the utime() call  |
   |          | when no mtime is passed in. Theses cache changes are        |
   |          | compatible with current stable portage (2.1.4.x), which     |
   |          | uses the _mtime_ field contained in the file when           |
   |          | available.                                                  |

   | 11986    | Store the _eclasses_ field instead of INHERITED.            |
   | zmedico  |                                                             |

   | 11988    | include quotes when showing make output                     |
   | SpankMan |                                                             |

   | 11990    | For emerge --metadata runs, update _eclasses_ metadata to   |
   | zmedico  | insert local eclass paths.                                  |

   | 11992    | Make serialize_eclasses() sort eclass names.                |
   | zmedico  |                                                             |

   | 11994    | When warning about 'missing repo_name', also give the exact |
   | zmedico  | path where the entry should exist, and explain that it      |
   |          | should be a plain text file containing a unique name of the |
   |          | first line. This should give the users enough information   |
   |          | to correct the problem without needing to seek help.        |

   | 11995    | Move the repo_name check/warning into a function.           |
   | zmedico  |                                                             |

   | 11997    | Bug #245779 - Document the new category subdirectory        |
   | zmedico  | behavior for PKGDIR.                                        |

   | 11999    | Bug #245716 - When generating QA notices for 'command not   |
   | zmedico  | found' messages in the build log, exclude messages that are |
   |          | emitted from configure scripts since those are normal in    |
   |          | some cases.                                                 |

   | 12001    | Remove --fetchonly --resume time.sleep() call which is an   |
   | zmedico  | artifact from the previous parallel-fetch implementation.   |

   | 12003    | Bug #247625 - Update PORTAGE_IONICE_COMMAND docs to reflect |
   | zmedico  | that it is unset by default.                                |

   | 12004    | Remove PORTAGE_IONICE_COMMAND setting since it's commented  |
   | zmedico  | out.                                                        |

svn path=/main/branches/prefix/; revision=12037