updated to 1.6 runtime

spring-integration-samples/ws-inbound-gateway/pom.xml

@@ -37,8 +37,8 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
 				<configuration>
-					<source>1.5</source>
-					<target>1.5</target>
+					<source>1.6</source>
+					<target>1.6</target>
 				</configuration>
 			</plugin>
 			<plugin>