Merged from trunk -r15750:15760

   Merged from trunk -r15750:15760

   | 15755   | Bug #308415 - Fix broken uri parameter passed to fetch ()    |
   | zmedico | for some cases when using ebuild(1).                         |

   | 15756   | Produce a warning message if the timestamp of the portage    |
   | zmedico | tree is more than 30 days old, and make it adjustable via    |
   |         | the PORTAGE_SYNC_STALE variable. Thanks to Ned Ludd          |
   |         | <solar@g.o> for the most of this code.                       |

   | 15757   | Note that PORTAGE_SYNC_STALE=0 will disable warnings.        |
   | zmedico |                                                              |

   | 15758   | Show --sync in messages, to help avoid confusion.            |
   | zmedico |                                                              |

   | 15759   | Bug #291331 - Force ascii encoding in send_mail() in order   |
   | zmedico | to avoid UnicodeEncodeError from smtplib.sendmail with       |
   |         | python3.                                                     |

svn path=/main/branches/prefix/; revision=15796