ReportBuilder: Add list var classifications

[#1]

um.. ok Adobe, 12 months ago you implemented list vars to RB.  Now finish thet job and make list var classifications available in RB.

http://ideas.omniture.com/t5/Idea-Exchange-for-Adobe/Add-List-Var-Reprts-to-Report-Builder /idi-p/6581

[#2]

List var classifications are available in version 4.7.40