Really fix hydra-eval-jobs

Dependencies

• [2] 7GKAIP3V Fix build and handling of string inputs starting with a dash
• [3] KD5237CU * eval-jobs now efficiently evaluates all Hydra jobs from a
• [4] AEFNBIIW * Merge the GC branch.
• [5] 4LWGZL33
• [6] 4N5APGRG * Start of a helper tool to evaluate job expressions efficiently.
• [7] AEKIREIH * Updated hydra_eval_jobs for the new evaluator.

Change contents

• replacement in src/c/hydra-eval-jobs.cc at line 37
  [3.393]→[3.393:426](∅→∅)
  − const Bindings & actualArgs)
  [3.393]

  [3.306]
  + Bindings & actualArgs) // FIXME: should be const
• replacement in src/c/hydra-eval-jobs.cc at line 42
  [3.613]→[3.613:647](∅→∅)
  − *arg->attrs = actualArgs;
  [3.613]

  [3.647]
  + arg->attrs = &actualArgs;
• replacement in src/c/hydra-eval-jobs.cc at line 62
  [3.733]→[3.880:941](∅→∅),[3.880]→[3.880:941](∅→∅)
  − Bindings actualArgs2(actualArgs); // !!! inefficient
  [3.733]

  [3.941]
  + Bindings & actualArgs2(*state.allocBindings(actualArgs.size() + 1)); // !!! inefficient

  + for (auto & i: actualArgs)

  + actualArgs2.push_back(i);
• edit in src/c/hydra-eval-jobs.cc at line 285
  [2.1844]→[2.1844:1896](∅→∅)
  − //evalAutoArgs(state, autoArgs_, autoArgs);