adjusted env var setting to append the current var if it was set
adjusted env var setting to append the current var if it was set

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