fix stress.py for removal of Clock struct.  patch by jbellis for CASSANDRA-1501
fix stress.py for removal of Clock struct.  patch by jbellis for CASSANDRA-1501

git-svn-id: af0234e1aff5c580ad966c5a1be7e5402979d927@999638 13f79535-47bb-0310-9956-ffa450edef68

christian-esken/cassandra,iamaleksey/cassandra,phact/cassandra,ptnapoleon/cassandra,aboudreault/cassandra,spodkowinski/cassandra,strapdata/cassandra,regispl/cassandra,yukim/cassandra,asias/cassandra,juiceblender/cassandra,newrelic-forks/cassandra,clohfink/cassandra,joesiewert/cassandra,tongjixianing/projects,aarushi12002/cassandra,yonglehou/cassandra,sharvanath/cassandra,DavidHerzogTU-Berlin/cassandraToRun,Stratio/cassandra,jeffjirsa/cassandra,newrelic-forks/cassandra,fengshao0907/Cassandra-Research,DICL/cassandra,sayanh/ViewMaintenanceSupport,thobbs/cassandra,kgreav/cassandra,hhorii/cassandra,bcoverston/apache-hosted-cassandra,apache/cassandra,apache/cassandra,beobal/cassandra,MasahikoSawada/cassandra,bcoverston/cassandra,rdio/cassandra,jeffjirsa/cassandra,caidongyun/cassandra,jkni/cassandra,darach/cassandra,stef1927/cassandra,hengxin/cassandra,helena/cassandra,kangkot/stratio-cassandra,yangzhe1991/cassandra,ptuckey/cassandra,sayanh/ViewMaintenanceCassandra,nutbunnies/cassandra,leomrocha/cassandra,aweisberg/cassandra,sharvanath/cassandra,snazy/cassandra,josh-mckenzie/cassandra,project-zerus/cassandra,guanxi55nba/db-improvement,clohfink/cassandra,blambov/cassandra,sivikt/cassandra,bdeggleston/cassandra,sayanh/ViewMaintenanceSupport,boneill42/cassandra,likaiwalkman/cassandra,DikangGu/cassandra,ejankan/cassandra,project-zerus/cassandra,cooldoger/cassandra,stuhood/cassandra-old,carlyeks/cassandra,juiceblender/cassandra,aweisberg/cassandra,guanxi55nba/key-value-store,Stratio/cassandra,mt0803/cassandra,instaclustr/cassandra,krummas/cassandra,RyanMagnusson/cassandra,bpupadhyaya/cassandra,scylladb/scylla-tools-java,pkdevbox/cassandra,codefollower/Cassandra-Research,clohfink/cassandra,scylladb/scylla-tools-java,xiongzheng/Cassandra-Research,macintoshio/cassandra,mt0803/cassandra,shookari/cassandra,Instagram/cassandra,mike-tr-adamson/cassandra,lalithsuresh/cassandra-c3,dprguiuc/Cassandra-Wasef,driftx/cassandra,shawnkumar/cstargraph,JeremiahDJordan/cassandra,sharvanath/cassandra,jasonwee/cassandra,Stratio/stratio-cassandra,bpupadhyaya/cassandra,Jaumo/cassandra,beobal/cassandra,Bj0rnen/cassandra,tjake/cassandra,rogerchina/cassandra,jasobrown/cassandra,bmel/cassandra,thobbs/cassandra,DavidHerzogTU-Berlin/cassandra,guanxi55nba/key-value-store,LatencyUtils/cassandra-stress2,apache/cassandra,RyanMagnusson/cassandra,kangkot/stratio-cassandra,driftx/cassandra,leomrocha/cassandra,matthewtt/cassandra_read,michaelsembwever/cassandra,pbailis/cassandra-pbs,qinjin/mdtc-cassandra,adelapena/cassandra,MasahikoSawada/cassandra,blambov/cassandra,mgmuscari/cassandra-cdh4,EnigmaCurry/cassandra,scaledata/cassandra,chaordic/cassandra,mashuai/Cassandra-Research,ifesdjeen/cassandra,gdusbabek/cassandra,nakomis/cassandra,helena/cassandra,jbellis/cassandra,jrwest/cassandra,aweisberg/cassandra,kgreav/cassandra,guard163/cassandra,fengshao0907/Cassandra-Research,boneill42/cassandra,szhou1234/cassandra,chbatey/cassandra-1,christian-esken/cassandra,likaiwalkman/cassandra,instaclustr/cassandra,yhnishi/cassandra,rdio/cassandra,hhorii/cassandra,taigetco/cassandra_read,swps/cassandra,sbtourist/cassandra,AtwooTM/cassandra,michaelmior/cassandra,dongjiaqiang/cassandra,michaelsembwever/cassandra,matthewtt/cassandra_read,nvoron23/cassandra,dkua/cassandra,bmel/cassandra,iburmistrov/Cassandra,jasobrown/cassandra,pofallon/cassandra,nlalevee/cassandra,mklew/mmp,WorksApplications/cassandra,mashuai/Cassandra-Research,pallavi510/cassandra,tjake/cassandra,knifewine/cassandra,ifesdjeen/cassandra,pbailis/cassandra-pbs,exoscale/cassandra,HidemotoNakada/cassandra-udf,a-buck/cassandra,krummas/cassandra,matthewtt/cassandra_read,adejanovski/cassandra,josh-mckenzie/cassandra,xiongzheng/Cassandra-Research,yanbit/cassandra,sriki77/cassandra,ifesdjeen/cassandra,pauloricardomg/cassandra,taigetco/cassandra_read,mshuler/cassandra,mkjellman/cassandra,bdeggleston/cassandra,adelapena/cassandra,snazy/cassandra,mshuler/cassandra,guard163/cassandra,hhorii/cassandra,bcoverston/cassandra,pthomaid/cassandra,vaibhi9/cassandra,sluk3r/cassandra,tommystendahl/cassandra,DikangGu/cassandra,Instagram/cassandra,GabrielNicolasAvellaneda/cassandra,stuhood/cassandra-old,vramaswamy456/cassandra,nvoron23/cassandra,cooldoger/cassandra,jeromatron/cassandra,sedulam/CASSANDRA-12201,stef1927/cassandra,mkjellman/cassandra,clohfink/cassandra,lalithsuresh/cassandra-c3,rackerlabs/cloudmetrics-cassandra,spodkowinski/cassandra,rmarchei/cassandra,macintoshio/cassandra,Stratio/cassandra,pkdevbox/cassandra,jbellis/cassandra,ollie314/cassandra,DavidHerzogTU-Berlin/cassandra,mike-tr-adamson/cassandra,iburmistrov/Cassandra,michaelmior/cassandra,jsanda/cassandra,DavidHerzogTU-Berlin/cassandra,taigetco/cassandra_read,jasonstack/cassandra,dprguiuc/Cassandra-Wasef,michaelsembwever/cassandra,thelastpickle/cassandra,ptnapoleon/cassandra,DICL/cassandra,WorksApplications/cassandra,whitepages/cassandra,aboudreault/cassandra,Jollyplum/cassandra,knifewine/cassandra,segfault/apache_cassandra,segfault/apache_cassandra,weideng1/ca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er/cassandra,JeremiahDJordan/cassandra,fengshao0907/cassandra-1,qinjin/mdtc-cassandra,blerer/cassandra,pallavi510/cassandra,rogerchina/cassandra,vaibhi9/cassandra,nlalevee/cassandra,tongjixianing/projects,jasobrown/cassandra,whitepages/cassandra,aureagle/cassandra,Jollyplum/cassandra,emolsson/cassandra,Stratio/stratio-cassandra,stuhood/cassandra-old,dprguiuc/Cassandra-Wasef,ibmsoe/cassandra,tommystendahl/cassandra,iamaleksey/cassandra,DavidHerzogTU-Berlin/cassandraToRun,ibmsoe/cassandra,ejankan/cassandra,blerer/cassandra,shookari/cassandra,jasonstack/cassandra,blerer/cassandra,vramaswamy456/cassandra,leomrocha/cassandra,adelapena/cassandra,pcn/cassandra-1,krummas/cassandra,jeromatron/cassandra,chaordic/cassandra,yukim/cassandra,sivikt/cassandra,mklew/mmp,mashuai/Cassandra-Research,LatencyUtils/cassandra-stress2,mambocab/cassandra,belliottsmith/cassandra,boneill42/cassandra,sayanh/ViewMaintenanceCassandra,ptnapoleon/cassandra,Instagram/cassandra,emolsson/cassandra,project-zerus/cassandra,Stratio/stratio-cassandra,DikangGu/cassandra,ibmsoe/cassandra,shookari/cassandra,aweisberg/cassandra,cooldoger/cassandra,pauloricardomg/cassandra,Bj0rnen/cassandra,yhnishi/cassandra,rackerlabs/cloudmetrics-cassandra,HidemotoNakada/cassandra-udf,iburmistrov/Cassandra,adejanovski/cassandra,instaclustr/cassandra,strapdata/cassandra,jsanda/cassandra,GabrielNicolasAvellaneda/cassandra,pcn/cassandra-1,stef1927/cassandra,a-buck/cassandra,gdusbabek/cassandra,nlalevee/cassandra,apache/cassandra,mambocab/cassandra,jeffjirsa/cassandra,beobal/cassandra,joesiewert/cassandra