prefixed FormattingInfo and PatternParser with Extras prefix to avoid classloading conflict

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/companions/extras/trunk@1483233 13f79535-47bb-0310-9956-ffa450edef68
removed unused test class

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/companions/extras/trunk@1483234 13f79535-47bb-0310-9956-ffa450edef68