LUCENE-4965: add dynamic numeric range faceting

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1477562 13f79535-47bb-0310-9956-ffa450edef68
LUCENE-4965: add dynamic numeric range faceting

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1477563 13f79535-47bb-0310-9956-ffa450edef68