Merged from trunk -r14160:14170

   Merged from trunk -r14160:14170

   | 14161    | Fix mkdir() to call the local setfscreate() with strict     |
   | zmedico  | returncode checking. Thanks to Chris PeBenito               |
   |          | <pebenito@gentoo.org> for this patch.                       |

   | 14162    | Use plain ascii encoding for this file, in order to avoid   |
   | zmedico  | error messages like this which building stages (happens     |
   |          | when python is built with USE=build): * Byte compiling      |
   |          | python modules for python-2.6 .. ... Compiling              |
   |          | //usr/lib64/portage/pym/portage/cache/ebuild_xattr.py ...   |
   |          | SyntaxError: ('unknown encoding: UTF8',                     |
   |          | ('//usr/lib64/portage/pym/portage/cache/ ebuild_xattr.py',  |
   |          | 0, 0, None))                                                |

   | 14163    | Fix tar_contents() to handle UnicodeEncodeError by falling  |
   | zmedico  | back to utf_8 if appropriate.                               |

   | 14164    | Fix the code from bug #275796 to ensure that choices always |
   | zmedico  | go into the preferred_in_graph slot when appropriate.       |

   | 14165    | Bug #278729 - Inside dep_zapdeps(), account for USE         |
   | zmedico  | dependencies in some cases where USE settings can adversely |
   |          | affect || preference evaluation. This requires invalid      |
   |          | atoms to be dropped inside _expand_new_virtuals() since we  |
   |          | only want real Atom instances inside dep_zapdeps(). Unlike  |
   |          | previous attempts to solve this bug, cases such as || (     |
   |          | foo[a] foo[b] ) should now be correctly handled.            |

   | 14166    | Improve logic for bug #278729.                              |
   | zmedico  |                                                             |

   | 14167    | Bug #281834 - In getconfig(), do not allow definition of    |
   | zmedico  | variables that have invalid names according to shell        |
   |          | standards (such as names containing hyphens).               |

   | 14168    | Use KeyValuePairFileLoader instead of getconfig() for       |
   | zmedico  | /etc/portage/modules, since getconfig() is too strict about |
   |          | variable names now. Thanks to Arfrever for reporting.       |

   | 14169    | Use KeyValuePairFileLoader intead on getconfig(), since     |
   | zmedico  | getconfig() is too strict about variable names now.         |

   | 14170    | Many packages use setuptools at run-time, so remove it from |
   | arfrever | list of suspected run-time dependencies.                    |

svn path=/main/branches/prefix/; revision=14177