update error handling post CASSANDRA-3979
update error handling post CASSANDRA-3979

mshuler/cassandra-dbapi2,flowroute/cassandra-dbapi2,stanhu/cassandra-dbapi2,CanWeStudio/cassandra-dbapi2,josh-mckenzie/cassandra-dbapi2,diezguerra/cassandra-dbapi2,pcmanus/python-cql,iGivefirst/cassandra-dbapi2,iflatness/cql,maraca/cassandra-dbapi2,EnigmaCurry/cassandra-dbapi2,pandu-rao/cassandra-dbapi2