Merged from trunk -r13180:13184

   Merged from trunk -r13180:13184

   | 13181   | Remove unused tar_opts variable inside unpack(). Thanks to   |
   | zmedico | zong_sharo for reporting.                                    |

   | 13182   | Fix domo and doexe to return non-zero if there are any       |
   | zmedico | errors. Thanks to zong_sharo for reporting.                  |

   | 13183   | Move distcc and ccache PATH setup later, after EAPI is       |
   | zmedico | guaranteed to be known, so that it's possible to do          |
   |         | indepenent EAPI-specific PATH modifications prior to the     |
   |         | distcc/ccache modifications.                                 |

   | 13184   | Source bashrc after PATH tweaks inside ebuild_main().        |
   | zmedico |                                                              |

svn path=/main/branches/prefix/; revision=13195