Merged from trunk 11357:11360

   Merged from trunk 11357:11360

   | 11358   | Remove redundant default pkg_nofetch, src_unpack, and        |
   | zmedico | src_test definitions which are now handled inside            |
   |         | _ebuild_phase_funcs().                                       |

   | 11359   | Increase Scheduler._job_delay_factor from 0.5 to 0.75 so     |
   | zmedico | that the delay ramps up a little quicker, since the current  |
   |         | value appears to be too weak in some cases.                  |

   | 11360   | When calling dbaip.aux_get() inside                          |
   | zmedico | depgraph._select_package(), only pull the keys that are      |
   |         | cached. This avoids triggering useless cache pulls for       |
   |         | INHERITED from the bindbapi.                                 |

svn path=/main/branches/prefix/; revision=11362