WHISKER-12 Build infra

- Updating to JDK1.6 since commons-lang3 is used heavily.
- Updating animal-sniffer config to catch JDK1.6.
- Local builds work fine, let's see on Jenkins.



git-svn-id: https://svn.apache.org/repos/asf/creadur/whisker/trunk@1619920 13f79535-47bb-0310-9956-ffa450edef68