updated version in configure.ac to 2.0-SNAPSHOT
updated version in configure.ac to 2.0-SNAPSHOT

git-svn-id: 9564524e887d65cbfe77c4fd75612775afad9401@500795 13f79535-47bb-0310-9956-ffa450edef68

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