Fixed doxygen mainpage problem.
Fixed doxygen mainpage problem.

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