Is there a Drupal.org issue queues module? Which module does Drupal.org use? Does Drupal.org use a module for its project issues tracking? I would like to implement it on our D7 site.

Does this exist as a module or is this something proprietary to drupal.org? If it is not a module, what is the closest I can get for Drupal 7?
The Project project, and Project issue tracker project, together make up most of the functionality that you are looking for. Since you ask about D7, it's worth noting that the modules are currently under upgrade to D7.

Project:


  Projects are generally assumed to represent software that has source code, releases, and so on.


Project issue tracker:


  It allows users to submit issues (bug reports, feature requests, tasks, etc) and enables teams to track their progress.