fixed error in build script which caused deeply-nested directories to misbehave
fixed error in build script which caused deeply-nested directories to misbehave

redoctopus/cmu-adv,evan-erdos/CMU.ADV,iasEnvy/cmu-adv,evan-erdos/cmu-adv,iasEnvy/cmu-adv,evan-erdos/CMU.ADV,redoctopus/cmu-adv,evan-erdos/cmu-adv,evan-erdos/CMU.ADV,redoctopus/cmu-adv,evan-erdos/cmu-adv,iasEnvy/cmu-adv,redoctopus/cmu-adv,evan-erdos/CMU.ADV,iasEnvy/cmu-adv,evan-erdos/cmu-adv