Updated version number to 1.7; 1.6 has been branched.
Updated version number to 1.7; 1.6 has been branched.

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