LUCENE-5859: Update changes entry to reflect backport

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619467 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/branches/branch_4x@1619471 13f79535-47bb-0310-9956-ffa450edef68
Add 4.11 to changes

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619473 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5894: refactor bulk merge logic

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619477 13f79535-47bb-0310-9956-ffa450edef68
SOLR-3617: add bin/solr and bin/solr.cmd scripts for starting, stopping, and running examples.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619480 13f79535-47bb-0310-9956-ffa450edef68
SOLR-6233: Provide basic command line tools for checking Solr status and health.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/branch_4x@1619482 13f79535-47bb-0310-9956-ffa450edef68