added btree search and btree bulkload operators and made some interfaces serializable

git-svn-id: https://hyracks.googlecode.com/svn/trunk@100 123451ca-8445-de46-9d55-352943316053
diff --git a/hyracks/hyracks-storage-am-btree/pom.xml b/hyracks/hyracks-storage-am-btree/pom.xml
index 06cac47..5d91b5a 100644
--- a/hyracks/hyracks-storage-am-btree/pom.xml
+++ b/hyracks/hyracks-storage-am-btree/pom.xml
@@ -39,6 +39,13 @@
   		<scope>compile</scope>
   	</dependency>  	
   	<dependency>
+  		<groupId>edu.uci.ics.hyracks</groupId>
+  		<artifactId>hyracks-dataflow-std</artifactId>
+  		<version>0.1.2-SNAPSHOT</version>
+  		<type>jar</type>
+  		<scope>compile</scope>
+  	</dependency>  	
+  	<dependency>
   		<groupId>junit</groupId>
   		<artifactId>junit</artifactId>
   		<version>4.8.1</version>