Scons cleanup to make it easier only run tests, expand docs.
Scons cleanup to make it easier only run tests, expand docs.



git-svn-id: 6fad7e08c77de41dc1272c73f94b605da69a8508@280 47b1ee86-127b-13bb-b609-7b595106ed26

google/carfac,google/carfac,google/carfac,google/carfac,google/carfac