Configurable support for static resource encodings

The new EncodedResourceResolver is a generalized version of
GzipResourceResolver that can be configured to support different
content codings, by "br" and "gzip".

GzipResourceResolver is now deprecated.

Issue: SPR-16381

spring-webmvc/src/test/resources/org/springframework/web/servlet/config/mvc-config-resources-chain-no-auto.xml

@@ -15,7 +15,7 @@
 						<bean class="org.springframework.web.servlet.resource.ContentVersionStrategy" />
 					</mvc:version-strategy>
 				</mvc:version-resolver>
-				<ref bean="gzipResourceResolver"/>
+				<ref bean="encodedResourceResolver"/>
 				<bean class="org.springframework.web.servlet.resource.PathResourceResolver"/>
 			</mvc:resolvers>
 			<mvc:transformers>
@@ -27,7 +27,7 @@
 		</mvc:resource-chain>
 	</mvc:resources>
 
-	<bean id="gzipResourceResolver" class="org.springframework.web.servlet.resource.GzipResourceResolver" />
+	<bean id="encodedResourceResolver" class="org.springframework.web.servlet.resource.EncodedResourceResolver" />
 	<bean id="resourceCache" class="org.springframework.cache.concurrent.ConcurrentMapCache">
 		<constructor-arg name="name" value="resourceCache"/>
 	</bean>

spring-webmvc/src/test/resources/org/springframework/web/servlet/resource/test/foo-e36d2e05253c6c7085a91522ce43a0b4.css

@@ -1 +0,0 @@
-h1 { color:red; }