DSL: JMS in/out adapters, outbound gateway

* Others fixes, improvements and refactoring

spring-integration-java-dsl/build.gradle

@@ -30,7 +30,7 @@ ext {
 	log4jVersion = '1.2.17'
 	slf4jVersion = '1.7.6'
 	springIntegrationVersion = '4.0.2.RELEASE'
-	springBootVersion = '1.1.0.BUILD-SNAPSHOT'
+	springBootVersion = '1.1.0.RELEASE'
 
 	linkHomepage = 'https://github.com/spring-projects/spring-integration-extensions'
 	linkCi = 'https://build.spring.io/browse/INTEXT'
@@ -81,7 +81,6 @@ dependencies {
 	testCompile "de.flapdoodle.embed:de.flapdoodle.embed.mongo:$embedMongoVersion"
 	testCompile "org.springframework.boot:spring-boot-autoconfigure:$springBootVersion"
 
-	testRuntime "log4j:log4j:$log4jVersion"
 	testRuntime "org.slf4j:jcl-over-slf4j:$slf4jVersion"
 	testRuntime "org.slf4j:slf4j-log4j12:$slf4jVersion"
 	testRuntime("org.apache.activemq:activemq-broker:$activeMqVersion")