LUCENE-4944: Prepend 'v' to (currently numeric) id attributes for release sections, and fail with a nice message when encountering the same section more than once within a single release.
LUCENE-4944: Prepend 'v' to (currently numeric) id attributes for release sections, and fail with a nice message when encountering the same section more than once within a single release.

git-svn-id: 308d55f399f3bd9aa0560a10e81a003040006c48@1470088 13f79535-47bb-0310-9956-ffa450edef68

apache/solr,apache/solr,apache/solr,apache/solr,apache/solr