add boost to hashCode: LUCENE-460

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@365976 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/lucene/search/MultiTermQuery.java

@@ -92,6 +92,6 @@ public abstract class MultiTermQuery extends Query {
     }
 
     public int hashCode() {
-      return term.hashCode();
+      return term.hashCode() + Float.floatToRawIntBits(getBoost());
     }
 }