I have been unable to find any such module, so if there was one, it is no longer supported. The discussion you refer to is from 2007, for v1.7 and didn't work in a v1.8. There can be any number of reasons why a module is not updated to meet the newer demands of later releases. Usually, I would think, the person/s who created the module have either moved on to other areas and do not have the time, or are no longer in an environment that supports their previous efforts. In this case, I suspect it was a kludge, so it may never have been a popular plugin or given the time, ever considered anything other than a 3rd party plugin of limited appeal.
As this can be a handy module, for students, staff and parents, in the more modern educational environment. I would suggest that you refer this as a Moodle Tracker item, a new development, so the module may be assigned for someone to create, if there is sufficient support for that. Alternatively, if you have access to someone with the skill set required, you may ask them if they would like to take over as maintainer of that module. It is a big ask though, so be thoughtful, if you can. Good luck.