Added missing include directories to the auxiliary/CMakeLists.txt file.
Added missing include directories to the auxiliary/CMakeLists.txt file.

robojukie/simbody,Gjacquenot/simbody,Gjacquenot/simbody,elen4/simbody,robojukie/simbody,scamille/simbody,chrisdembia/simbody,elkingtonmcb/simbody,elkingtonmcb/simbody,simbody/simbody,scamille/simbody,chrisdembia/simbody,simbody/simbody,chrisdembia/simbody,robojukie/simbody,Gjacquenot/simbody,elen4/simbody,elkingtonmcb/simbody,scamille/simbody