added version numbers to plugins

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/companions/extras/trunk@1531811 13f79535-47bb-0310-9956-ffa450edef68
reverted version number from previous RC

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/companions/extras/trunk@1531812 13f79535-47bb-0310-9956-ffa450edef68