SOLR-3617: clean-up a few error messages and update changes to add to 4.10 release

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1619461 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5859: Update changes entry to reflect backport

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1619466 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6314: updated bug title to be more accurate and include Vamsee in credits, all in CHNAGES.txt. No code changes

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1619470 13f79535-47bb-0310-9956-ffa450edef68
Add 4.11 to changes

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1619475 13f79535-47bb-0310-9956-ffa450edef68