INTSAMPLES-17 added simple HTTP echo sample with inbound and outbound gateway

basic/http/src/main/webapp/META-INF/MANIFEST.MF

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+Manifest-Version: 1.0
+Class-Path: 
+

basic/http/src/main/webapp/WEB-INF/servlet-config.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
+		http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration-2.0.xsd
+		http://www.springframework.org/schema/integration/file http://www.springframework.org/schema/integration/file/spring-integration-file-2.0.xsd
+		http://www.springframework.org/schema/integration/http http://www.springframework.org/schema/integration/http/spring-integration-http-2.0.xsd"
+	xmlns:int="http://www.springframework.org/schema/integration"
+	xmlns:int-file="http://www.springframework.org/schema/integration/file"
+	xmlns:int-http="http://www.springframework.org/schema/integration/http"
+	xmlns:int-mail="http://www.springframework.org/schema/integration/mail">
+
+	<int-http:inbound-gateway request-channel="receiveChannel"
+                          name="/receiveGateway"
+                          supported-methods="POST"/>
+                          
+	<int:channel id="receiveChannel"/>	
+	
+	<int:service-activator input-channel="receiveChannel" expression="payload + ' from the other side'"/>
+</beans>

basic/http/src/main/webapp/WEB-INF/web.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
+  <display-name>multipart-http</display-name>
+  <servlet>
+    <servlet-name>Multipart</servlet-name>
+    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
+    <init-param>
+      <param-name>contextConfigLocation</param-name>
+      <param-value>/WEB-INF/servlet-config.xml</param-value>
+    </init-param>
+    <load-on-startup>1</load-on-startup>
+  </servlet>
+  <servlet-mapping>
+    <servlet-name>Multipart</servlet-name>
+    <url-pattern>/*</url-pattern>
+  </servlet-mapping>
+</web-app>