Added Binary Preclustered Group Operator. Preclustered and Hash based group operators now use the same aggregator interface. Added a Frame Writing Operator.

git-svn-id: https://hyracks.googlecode.com/svn/trunk/hyracks@132 123451ca-8445-de46-9d55-352943316053
diff --git a/hyracks-examples/tpch-example/tpchapp/pom.xml b/hyracks-examples/tpch-example/tpchapp/pom.xml
index d95511d..cc0b0b9 100644
--- a/hyracks-examples/tpch-example/tpchapp/pom.xml
+++ b/hyracks-examples/tpch-example/tpchapp/pom.xml
@@ -48,11 +48,11 @@
     </plugins>
   </build>
   <dependencies>
-  	<dependency>
-  		<groupId>edu.uci.ics.hyracks.examples.tpch</groupId>
-  		<artifactId>tpchhelper</artifactId>
-  		<version>0.1.3-SNAPSHOT</version>
-  		<scope>compile</scope>
-  	</dependency>
+    <dependency>
+        <groupId>edu.uci.ics.hyracks</groupId>
+        <artifactId>hyracks-dataflow-std</artifactId>
+        <version>0.1.3-SNAPSHOT</version>
+        <scope>compile</scope>
+    </dependency>
   </dependencies>
 </project>