Comment 10 for bug 185357

I rewrote basebuglistfilter.datereported() in rev117 of the intrepid.merge branch. The API changed compared to the former approaches here in the bugreport, so we need to rewrite the bughelper part too.
This solution is more robust, faster and has more readable code.
I attached a example script which should show the usage and gives us a possibility to test this function, please use it ;)

Markus