Integrate suggested support for creating MVC URLs

The key contract is MvcUrls. An instance is automatically created with
the Spring MVC namespace and the MVC Java config but can also be easily
created in any configuration.

Some example tests can be found in DefaultMvcUrlsTests.

Issue: SPR-10665, SPR-8826

build.gradle

@@ -689,6 +689,7 @@ project("spring-webmvc") {
 		testCompile("commons-io:commons-io:1.3")
 		testCompile("org.hibernate:hibernate-validator:4.3.0.Final")
 		testCompile("org.apache.httpcomponents:httpclient:4.3-beta2")
+		testCompile("joda-time:joda-time:2.2")
 	}
 
 	// pick up DispatcherServlet.properties in src/main