Merged from trunk -r15497:15507

   Merged from trunk -r15497:15507

   | 15501   | Remove unused imports.                                       |
   | zmedico |                                                              |

   | 15502   | Remove unused print() import.                                |
   | zmedico |                                                              |

   | 15503   | Bug #307235 - Inside depgraph._add_dep, discard child        |
   | zmedico | choices for deps that will be not be processed immediately,  |
   |         | since "complete" mode may select a different child later.    |

   | 15504   | Remove unused print_function.                                |
   | zmedico |                                                              |

   | 15505   | Remove redundant local elog_process import that can trigger  |
   | zmedico | UnboundLocalError in some cases.                             |

   | 15506   | Remove redundant eerror import.                              |
   | zmedico |                                                              |

   | 15507   | Call stack_lists on profile_only_variables for incremental   |
   | zmedico | processing.                                                  |

svn path=/main/branches/prefix/; revision=15735