INTSAMPLES-122: Migrate to Gradle

JIRA: https://jira.springsource.org/browse/INTSAMPLES-122

INTSAMPLES-122: Polishing

INTSAMPLES-122: Add generated poms

* Upgrade some dependencies

INTSAMPLES-122: Cover Java/DSL sample

INTSAMPLES-122: Upgrade to SI 4.0.1 & SF 4.0.5

INTSAMPLES-122: Polishing according PR comments

Make gradlew executable

basic/amqp/src/main/java/org/springframework/integration/service/StringConversionService.java

@@ -1,31 +0,0 @@
-/*
- * Copyright 2002-2010 the original author or authors
- *
- *     Licensed under the Apache License, Version 2.0 (the "License");
- *     you may not use this file except in compliance with the License.
- *     You may obtain a copy of the License at
- *
- *         http://www.apache.org/licenses/LICENSE-2.0
- *
- *     Unless required by applicable law or agreed to in writing, software
- *     distributed under the License is distributed on an "AS IS" BASIS,
- *     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *     See the License for the specific language governing permissions and
- *     limitations under the License.
- */
-package org.springframework.integration.service;
-
-/**
- * Provides string manipulation services.
- */
-public interface StringConversionService {
-
-    /**
-     * Converts a String to Upper Case.
-     *
-     * @param stringToConvert The string to convert to upper case
-     * @return The converted upper case string.
-     */
-    String convertToUpperCase(String stringToConvert);
-
-}