LUCENE-5648: (NumberRangePrefixTree) Bug-fix in initIter optimization. Re-index required.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1602857 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-5761: Remove DiskDocValuesFormat

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1602862 13f79535-47bb-0310-9956-ffa450edef68