Make idf(docFreq,numDocs) public instead of protected.
Make idf(docFreq,numDocs) public instead of protected.


git-svn-id: 4c5078813df38efa56971a28e09a55254294f104@150106 13f79535-47bb-0310-9956-ffa450edef68

apache/solr,apache/solr,apache/solr,apache/solr,apache/solr