DATACMNS-630 - Added HandlerMethodArgumentResolver to create proxies for interfaces.

We now ship a ProxyingHandlerMethodArgumentResolver that gets registered when @EnableSpringDataWebSupport is activated. It creates Map-based proxy instances for interfaces used as Spring MVC controller method parameters.

src/test/java/org/springframework/data/projection/MapAccessingMethodInterceptorUnitTests.java

@@ -120,7 +120,7 @@ public class MapAccessingMethodInterceptorUnitTests {
 		new MapAccessingMethodInterceptor(Collections.<String, Object> emptyMap()).invoke(invocation);
 	}
 
-	public static interface Sample {
+	interface Sample {
 
 		String getName();