In FunctionBasedImpl, make sure that CacheInfo "valid" flags are initialized to "false".
In FunctionBasedImpl, make sure that CacheInfo "valid" flags are initialized to "false".

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