+ update commons-pool to 1.5.3 to avoid some memory leaks

pom.xml

@@ -81,6 +81,12 @@
 			<version>1.2.2.osgi</version>
 			<scope>runtime</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.commons</groupId>
+			<artifactId>com.springsource.org.apache.commons.pool</artifactId>
+			<version>1.5.3</version>
+			<scope>runtime</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.hsqldb</groupId>
 			<artifactId>com.springsource.org.hsqldb</artifactId>