Merged from trunk -r14820:14845

   Merged from trunk -r14820:14845

   | 14821   | Bug #291200 - Make --quiet-build set PORTAGE_QUIET=1, so     |
   | zmedico | that --unmerge is quiet.                                     |

   | 14822   | Bug #288083 - Always warn about installed packages masked by |
   | zmedico | license, since the user likely wants to adjust               |
   |         | ACCEPT_LICENSE. For updates masked by license, warn if       |
   |         | --complete-graph or --deep is given, since otherwise it is   |
   |         | likely a waste of time.                                      |

   | 14823   | In the code from bug #288083, only show one LICENSE masking  |
   | zmedico | message per slot.                                            |

   | 14824   | Remove SLOT.missing since SLOT.invalid handles that case     |
   | zmedico | now.                                                         |

   | 14844   | Bug #293448 - Fix TypeError when sending mail with python3,  |
   | zmedico | triggered by this issue: http://bugs.python.org/issue6521.   |
   |         | Thanks to Albert W. Hopkins <marduk@python.net> for this     |
   |         | patch.                                                       |

   | 14845   | Check for updates masked by license for any installed        |
   | zmedico | packages that have been added to the graph (regardless of    |
   |         | --deep or --complete-graph)..                                |

svn path=/main/branches/prefix/; revision=14850