LUCENE-5257: Lock down centralized versioning of ivy dependencies

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529243 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5257: Fix top-level validate target subant invocation syntax

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529246 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5257: merge CHANGES.txt entry with LUCENE-5249's entry

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529249 13f79535-47bb-0310-9956-ffa450edef68
SOLR-5301: DELETEALIAS command prints CREATEALIAS in logs

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1529335 13f79535-47bb-0310-9956-ffa450edef68