Port the build to Gradle

Closes gh-1457

Author: wilkinsona

.gitignore

@@ -1,28 +1,15 @@
 *.ipr
 *.iws
 *.iml
-target
-.clover
-activemq-data
 *.hsp
-atlassian-ide-plugin*.xml
 
 .idea
-out
+out/
 
-/build
-/spring-*/bin
-/spring-*/build
-.gradle
+build/
+.gradle/
 
-_site
-/.classpath
-/.project
-/.settings/
-
-*.versionsBackup
-
-credentials.yml
-.flattened-pom.xml
-.mvn/.gradle-enterprise
-.mvn/.develocity
+.classpath
+.project
+.settings/
+bin/

.mvn/develocity.xml

@@ -44,18 +44,9 @@ added after the original pull request but before a merge.
 * When writing a commit message please follow http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html[these conventions].
 
 === Building from source
-This project includes the Maven wrapper, meaning you don't have to install any CLI tools to compile. Simply clone it and do this:
-
-==== Default build
-The project can be built from the root directory using the standard Maven wrapper command:
-
-----
-$ ./mvnw clean package
-----
-
-If you are rebuilding often, you might also want to skip the tests until you are ready
-to submit a pull request:
+This project includes the Gradle wrapper, meaning you don't have to install any CLI tools to compile.
+Once you've cloned the project, it can be built from the root directory using the following command:
 
 ----
-$ ./mvnw clean package -Dmaven.test.skip=true
+$ ./gradlew build
 ----

.mvn/extensions.xml

@@ -20,7 +20,7 @@ Please visit https://spring.io/projects/spring-ws to get the right Maven/Gradle
 
 == Building Spring Web Services
 
-. Run `./mvnw clean package`
+. Run `./gradlew build`
 
 This will generate the artifacts.
 

.mvn/wrapper/maven-wrapper.jar

@@ -0,0 +1,4 @@
+version=4.0.12-SNAPSHOT
+
+org.gradle.caching=true
+org.gradle.parallel=true

.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,5 @@
+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.3//EN" "https://checkstyle.org/dtds/configuration_1_3.dtd">
+<module name="com.puppycrawl.tools.checkstyle.Checker">
+	<module name="io.spring.javaformat.checkstyle.SpringChecks"/>
+</module>