Check destination names on creation to make sure they aren't empty strings, throw an exception is they are. 
Check destination names on creation to make sure they aren't empty strings, throw an exception is they are. 

git-svn-id: 0fb8a5a922afe2085ae9a967a0cf0864fe09ecff@755430 13f79535-47bb-0310-9956-ffa450edef68

apache/activemq-cpp,apache/activemq-cpp,apache/activemq-cpp,apache/activemq-cpp