InMemory: Fix test failing with Java 8 on Windows

git-svn-id: https://svn.apache.org/repos/asf/chemistry/opencmis/trunk@1643998 13f79535-47bb-0310-9956-ffa450edef68
server-support: upgrade maven antlr plugin to avoid NPE with Java8

git-svn-id: https://svn.apache.org/repos/asf/chemistry/opencmis/trunk@1643999 13f79535-47bb-0310-9956-ffa450edef68