Removed Pair. Using Pair from commons-lang

git-svn-id: https://hyracks.googlecode.com/svn/branches/hyracks_dev_next@946 123451ca-8445-de46-9d55-352943316053
diff --git a/hyracks-api/pom.xml b/hyracks-api/pom.xml
index ad101d5..c18995d 100644
--- a/hyracks-api/pom.xml
+++ b/hyracks-api/pom.xml
@@ -47,5 +47,10 @@
   		<artifactId>hyracks-ipc</artifactId>
   		<version>0.2.0-SNAPSHOT</version>
   	</dependency>
+  	<dependency>
+  		<groupId>org.apache.commons</groupId>
+  		<artifactId>commons-lang3</artifactId>
+  		<version>3.1</version>
+  	</dependency>
   </dependencies>
 </project>