Update maven-javadoc-plugin to 2.4 because 2.3 had trouble with IBM JDK
Update maven-javadoc-plugin to 2.4 because 2.3 had trouble with IBM JDK


git-svn-id: e057f57e93a604d3b43d277ae69bde5ebf332112@667256 13f79535-47bb-0310-9956-ffa450edef68

apache/felix-dev,apache/felix-dev,apache/felix-dev,apache/felix-dev