reverted CMakeLists.txt to r660
reverted CMakeLists.txt to r660

rwcarlsen/cyclus,hodger/cyclus,gidden/cyclus,hodger/cyclus,gidden/cyclus,hodger/cyclus,mbmcgarry/cyclus,rwcarlsen/cyclus,gidden/cyclus,Baaaaam/cyclus,mbmcgarry/cyclus,Baaaaam/cyclus,mbmcgarry/cyclus,gidden/cyclus,rwcarlsen/cyclus,rwcarlsen/cyclus,hodger/cyclus,Baaaaam/cyclus,hodger/cyclus,mbmcgarry/cyclus