CAMEL-5982 enable the filterOld option on the SearchProducer

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1436214 13f79535-47bb-0310-9956-ffa450edef68
CAMEL-5984 Specification of the language for the search Consumer and Producer with thanks to Luca

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1436215 13f79535-47bb-0310-9956-ffa450edef68