atest: fixed standalone tests when CLASSPATH not set
atest: fixed standalone tests when CLASSPATH not set

synsun/robotframework,robotframework/robotframework,snyderr/robotframework,synsun/robotframework,HelioGuilherme66/robotframework,joongh/robotframework,jaloren/robotframework,moto-timo/robotframework,joongh/robotframework,synsun/robotframework,synsun/robotframework,alexandrul-ci/robotframework,alexandrul-ci/robotframework,moto-timo/robotframework,moto-timo/robotframework,jaloren/robotframework,joongh/robotframework,jaloren/robotframework,joongh/robotframework,HelioGuilherme66/robotframework,synsun/robotframework,snyderr/robotframework,jaloren/robotframework,joongh/robotframework,moto-timo/robotframework,robotframework/robotframework,snyderr/robotframework,snyderr/robotframework,robotframework/robotframework,jaloren/robotframework,snyderr/robotframework,moto-timo/robotframework,alexandrul-ci/robotframework,HelioGuilherme66/robotframework,alexandrul-ci/robotframework,alexandrul-ci/robotframework