I have queried directly with Intel which is still pending. Basically I have searched the internet quite rigorously but have been unable to determine if the asynchronous library described here is available as part of the library downloaded from here.
Note: I have actually installed Student version of Intel Parallel Studio XE Cluster Edition for windows, which as far as I can tell includes the ipp library linked above.
I intend to use the library as part of OpenCV-3.0, which I have successfully built without ipp_a for the time being using cmake.
My end goal for now is to be able to run this tutorial successfully.