(Patch by Duane Griffin.  Reviewed and approved by Stefan Behnel.)

Patch by Roger Serwy, updated by Bayard Randel.

Patch by Roger Serwy, updated by Bayard Randel.

Patch by wim glenn.

Patch adapted from https://github.com/ghaering/pysqlite/commit/9b79188edbc50faa24dc178afe24a10454f3fcad

Ivan Levkivskyi (3.5 version)

Ivan Levkivskyi (3.6 version)

* BUILD_TUPLE_UNPACK and BUILD_MAP_UNPACK_WITH_CALL no longer generated with
  single tuple or dict.
* Restored more informative error messages for incorrect var-positional and
  var-keyword arguments.
* Removed code duplications in _PyEval_EvalCodeWithName().
* Removed redundant runtime checks and parameters in _PyStack_AsDict().
* Added a workaround and enabled previously disabled test in test_traceback.
* Removed dead code from the dis module.

This is a further restoration of backward compatibility, as well as
being correct per the RFCs.