SOLR-5464,SOLR-5465,SOLR-5452: Fix CHANGES entries - move to 4.6
SOLR-5464,SOLR-5465,SOLR-5452: Fix CHANGES entries - move to 4.6

git-svn-id: 308d55f399f3bd9aa0560a10e81a003040006c48@1543450 13f79535-47bb-0310-9956-ffa450edef68

cscorley/solr-only-mirror,cscorley/solr-only-mirror,cscorley/solr-only-mirror