PIG-3132: NPE when illustrating a relation with HCatLoader

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Add license header for DOTParser.jjt

git-svn-id: https://svn.apache.org/repos/asf/pig/branches/branch-0.11@1460796 13f79535-47bb-0310-9956-ffa450edef68
PIG-3260:  Number of languages which support UDF is listed 3 instead of 5 

git-svn-id: https://svn.apache.org/repos/asf/pig/branches/branch-0.11@1460844 13f79535-47bb-0310-9956-ffa450edef68