fixed build to use cassandra-dir
fixed build to use cassandra-dir

aglne/Solandra,yonglehou/Solandra,yonglehou/Solandra,yonglehou/Solandra,tjake/Solandra,aglne/Solandra,tjake/Solandra,tjake/Solandra,aglne/Solandra,aglne/Solandra,yonglehou/Solandra,aglne/Solandra,tjake/Solandra,yonglehou/Solandra