Issue: SPR-14958

Issue: SPR-14926
Issue: SPR-12926

Issue: SPR-13481

Issue: SPR-13188

Issue: SPR-13188

Issue: SPR-14888

Issue: SPR-14883

Issue: SPR-14542

This commit adds a Model implementation based on ConcurrentHashMap for
use in Spring Web Reactive.

Issue: SPR-14542

Issue: SPR-14881

Issue: SPR-14879

Issue: SPR-10502

Issue: SPR-14583

(cherry picked from commit 77e00f19)

Includes consistent quoting of qualified type names in related classes.

Issue: SPR-14831

Issue: SPR-14783

Issue: SPR-14781
Issue: SPR-14801

Issue: SPR-14846

This commit further refines 240f254b to also support java.util.Optional
for synchronized cache access (i.e. when the `sync` attribute on
`@Cacheable` is set to `true`).

Issue: SPR-14853

This commit moves `NoOpCache` to a top-level public class to allow reuse
in custom CacheManager arrangement.

Issue: SPR-14856

This commit makes sure that the `unregister` order of registered
application contexts has no incidence on the removal of the LiveBeansView
MBean.

Rather than using the last application context's name to compute the
identity of the MBean to remove, the identity is stored when the MBean is
created.

This commit also adds missing tests.

Issue: SPR-14848

Issue: SPR-14812

Issue: SPR-14822

Closes gh-1206

String with version 5 the name of Java Platform, Enterprise Edition
changed from J2EE to Java EE. However a lot of the documentation still
uses the term J2EE.

This commit includes the following changes:

 * replace J2EE with Java EE where appropriate

This is not a blind search and replace. The following occurrences
remain unchanged:

 * references to old J2EE releases, most notably 1.3 and 1.4.
 * references to "Expert One-On-One J2EE Design and Development"
 * references to "Core J2EE patterns"
 * XML namespaces
 * package names

Issue: SPR-14811
See gh-1206

Issue: SPR-14780

Issue: SPR-8282

Issue: SPR-14793

Issue: SPR-14778

Issue: SPR-14728

In order to simplify configuration for use cases involving @Bean where
only a bean name or aliases are supplied as an attribute, this commit
introduces a new 'value' attribute that is an @AliasFor 'name' in @Bean.

Issue: SPR-14728