feature: Wukong 4.0.0

Squashed commit of the following:

commit b82bc418ab430ba4268ee2feca10b959a9f90a37
Author: Travis Dempsey <dempsey.travis@gmail.com>
Date:   Wed Mar 19 17:31:38 2014 -0500

    make all srp wu-versions line up

Change-Id: I233c52fb19a6d59aedfb49e0595d3a8e122c4a29