SOLR-5874,SOLR-5899: move CHANGES.txt entries to 4.7.1 section (merged trunk r1581220)
SOLR-5874,SOLR-5899: move CHANGES.txt entries to 4.7.1 section (merged trunk r1581220)

git-svn-id: 13f9c63152c129021c7e766f4ef575faaaa595a2@1581221 13f79535-47bb-0310-9956-ffa450edef68

PATRIC3/p3_solr,PATRIC3/p3_solr,PATRIC3/p3_solr,PATRIC3/p3_solr,PATRIC3/p3_solr,PATRIC3/p3_solr,PATRIC3/p3_solr