trivial improvement.
-check cluster members before sending replicate message.
-avoid unnecessary calculating of Iteration count for background processing. 

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1469703 13f79535-47bb-0310-9956-ffa450edef68
Expose processDeployFrequency via JMX. 

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@1469708 13f79535-47bb-0310-9956-ffa450edef68