Merged revision(s) 1433653 from lucene/dev/branches/branch_4x:
LUCENE-4465: Let ConstantScoreQuery's Scorer return its child scorer.

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/branches/lucene_solr_4_1@1433656 13f79535-47bb-0310-9956-ffa450edef68