DATAMONGO-1514 - SpringDataMongodbQuery needs to be public.

SpringDataMongodbQuery is exposed publicly in QuerydslRepositorySupport, that's we've got to make it public to make sure class to the exposed methods from outside the package actually compile.

Original pull request: #401.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/support/SpringDataMongodbQuery.java

@@ -27,7 +27,7 @@ import com.mysema.query.mongodb.MongodbQuery;
  * 
  * @author Oliver Gierke
  */
-class SpringDataMongodbQuery<T> extends MongodbQuery<T> {
+public class SpringDataMongodbQuery<T> extends MongodbQuery<T> {
 
 	private final MongoOperations operations;