Adding IPredicateEvaluator for issue 423 at hyracks level

 Author:    pouria.pirzadeh@gmail.com <pouria.pirzadeh@gmail.com@123451ca-8445-de46-9d55-352943316053>
diff --git a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/IPredicateEvaluatorFactoryProvider.java b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/IPredicateEvaluatorFactoryProvider.java
index 029ab211..8170356 100644
--- a/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/IPredicateEvaluatorFactoryProvider.java
+++ b/hyracks/hyracks-api/src/main/java/edu/uci/ics/hyracks/api/dataflow/value/IPredicateEvaluatorFactoryProvider.java
@@ -20,7 +20,6 @@
 /*
  * Provides PredicateEvaluatorFactory based on (equi-join) keys 		
  */
-
 public interface IPredicateEvaluatorFactoryProvider extends Serializable{
 	public IPredicateEvaluatorFactory getPredicateEvaluatorFactory(int[] keys0, int[] keys1);
 }