Fix for intermitent test failure at:

testOneProducerManyConsumersManyMessages(org.apache.activemq.broker.policy.RoundRobinDispatchPolicyTest)
It was checking that messages were evenly distributed accross consumers but that can only be garanteed when 
the consumer prefetches can hold all the published messages.



git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@561113 13f79535-47bb-0310-9956-ffa450edef68

activemq-core/src/test/java/org/apache/activemq/broker/QueueSubscriptionTest.java

@@ -108,7 +108,7 @@ public class QueueSubscriptionTest extends JmsMultipleClientsTestSupport {
         producerCount = 1;
         messageCount  = 1000;
         messageSize   = 1; // 1 byte
-        prefetchCount = 10;
+        prefetchCount = messageCount/consumerCount;
 
         doMultipleClientsTest();