After all of that.....
No, there is no table object that I'm aware of that supports 508 compliance. About a year after the document that you reference came out, SAP purchased BusinessObjects. Crystal Reports was included in that purchase. I'm guessing that this functionality may have fallen through the cracks during this time period.
You might want to suggest this on IdeaPlace - https://ideas.sap.com. This is where SAP is looking for requests for new features. If you do post it there, please post back here with the link to your idea. I'll spread the word on it and so will a couple of other people to see whether we can get it voted up far enough that SAP will look at it.
-Dell