Fix ResolvableType.hashCode() to use the source of the variable
resolver, rather than the resolver itself.

Update "enableMatrixVariables" and "ignoreDefaultModelOnRedirect" to
use the more conventional XML form "enable-matrix-variables" and
"ignore-default-model-on-redirect".

Both forms are now supported by `AnnotationDrivenBeanDefinitionParser`,
with newer names being defined in the 4.0 XSD and the older names
remaining in the 3.2 XSD.

Issue: SPR-11136

Issue: SPR-11063

Add 'spring-framework-bom' meta-project that contains the other projects
in a dependencyManagement section.

Issue: SPR-11138

This commit adds an XML namespace equivalent of @EnableWebSocket and
@EnableWebSocketMessageBroker. Those are <websocket:handlers> and
<websocket:message-broker> respectively.

Examples can be found in the test suite.

This commit also alters the way MessageHandler's subscribe to their
respective MessageChannel's of interest. Rather than performing the
subscriptions in configuration code, the message channels are now
passed into MessageHandler's so they can subscribe themselves on
startup.

Issue: SPR-11063

Issue: SPR-10561

Extended testPrototypeCreationWithOverriddenAutowiredPropertiesIsFastEnough's deadline (since that test repeatedly failed on the CI server)

This is necessary for source compatibility with existing callers, such as code found in Spring Integration: e.g. passing the arrayToList result into a typed HashSet constructor.

Issue: SPR-7966

Issue: SPR-11132

Issue: SPR-10864

Issue: SPR-10864

Fix CacheAspectSupport to consider a cache hit from any of the multiple
@Cachables that may have been specified using the @Caching annotation.

Prior to this commit the following scenario would never produce a hit:

	@Caching(cacheable = {
		@Cacheable(value = "c1", unless = "#result.size() < 4"),
		@Cacheable(value = "c2", unless = "#result.size() > 3")
	})

Issue: SPR-11124

Update code to have a consistent number of new-line characters after
import statements.

Apply consistent styling to new classes introduced in Spring 4.0.

- Javadoc line wrapping, whitespace and formatting
- General code whitespace
- Consistent Assert.notNull messages

@EnableWebSocketMessageBroker message channel configuration can now be
customized via WebSocketMessageBrokerConfigurer. It is necessary to
make this easy and even required as part of the basic configuration
since by default the message channels are backed by a thread pool of
size 1, not suitable for production use.

Issue: SPR-11023

Two concurrent threads should not send a message on a single WebSocket
session at the same time, for example see:
http://docs.oracle.com/javaee/7/api/javax/websocket/RemoteEndpoint.Basic.html

In StompSubProtocolHandler it is quite possible that multiple messages
may be broadcast to a single WebSocket client concurrently.

This change adds synchronization around the sending of a message to a
specific cilent session.

Issue: SPR-11023

* SPR-11038:
  Support meta-annotation attr overrides in the TCF

Prior to this commit, the Spring TestContext Framework (TCF) supported
the use of test-related annotations as meta-annotations for composing
custom test stereotype annotations; however, attributes in custom
stereotypes could not be used to override meta-annotation attributes.

This commit addresses this by allowing attributes from the following
annotations (when used as meta-annotations) to be overridden in custom
stereotypes.

- @ContextConfiguration
- @ActiveProfiles
- @DirtiesContext
- @TransactionConfiguration
- @Timed
- @TestExecutionListeners

This support depends on functionality provided by
AnnotatedElementUtils. See the 'Notes' below for further details and
ramifications.

Notes:

- AnnotatedElementUtils does not support overrides for the 'value'
  attribute of an annotation. It is therefore not possible or not
  feasible to support meta-annotation attribute overrides for some
  test-related annotations.
- @ContextHierarchy, @WebAppConfiguration, @Rollback, @Repeat, and
  @ProfileValueSourceConfiguration define single 'value' attributes
  which cannot be overridden via Spring's meta-annotation attribute
  support.
- Although @IfProfileValue has 'values' and 'name' attributes, the
  typical usage scenario involves the 'value' attribute which is not
  supported for meta-annotation attribute overrides. Furthermore,
  'name' and 'values' are so generic that it is deemed unfeasible to
  provide meta-annotation attribute override support for these.
- @BeforeTransaction and @AfterTransaction do not define any attributes
  that can be overridden.
- Support for meta-annotation attribute overrides for @Transactional is
  provided indirectly via SpringTransactionAnnotationParser.

Implementation Details:

- MetaAnnotationUtils.AnnotationDescriptor now provides access to the
  AnnotationAttributes for the described annotation.
- MetaAnnotationUtils.AnnotationDescriptor now provides access to the
  root declaring class as well as the declaring class.
- ContextLoaderUtils now retrieves AnnotationAttributes from
  AnnotationDescriptor to look up annotation attributes for
  @ContextConfiguration and @ActiveProfiles.
- ContextConfigurationAttributes now provides a constructor to have its
  attributes sourced from an instance of AnnotationAttributes.
- ContextLoaderUtils.resolveContextHierarchyAttributes() now throws an
  IllegalStateException if no class in the class hierarchy declares
  @ContextHierarchy.
- TransactionalTestExecutionListener now uses AnnotatedElementUtils to
  look up annotation attributes for @TransactionConfiguration.
- Implemented missing unit tests for @Rollback resolution in
  TransactionalTestExecutionListener.
- SpringJUnit4ClassRunner now uses AnnotatedElementUtils to look up
  annotation attributes for @Timed.
- TestContextManager now retrieves AnnotationAttributes from
  AnnotationDescriptor to look up annotation attributes for
  @TestExecutionListeners.
- DirtiesContextTestExecutionListener now uses AnnotatedElementUtils to
  look up annotation attributes for @DirtiesContext.

Issue: SPR-11038

Delete the unused GlassFishLoadTimeWeaverTests and in the process
fix the "Unable to load JUnit4 runner to calculate Ignored test cases"
Gradle error.

Issue: SPR-10563

Issue: SPR-11105

This change fixes a timing issue in tests using Spring MVC Tests where
assertions on an async result may not wait long enough.

The fix involves the use of a new callback in  MockAsyncContext that
allows tests to detect when an async dispatch has been invoked.

Issue: SPR-10838

@Rollback now supports ANNOTATION_TYPE as a target, allowing it to be
used as meta-annotation.

Note: this change was accidentally omitted from the original commit for
SPR-7827.

Issue: SPR-7827

* doc-typos:
  Fix various typos

Fix a variety of typos throughout the project, primarily in
comments (javadoc or otherwise) but also in a handful of log messages
and a couple exception messages.

ISSUE: SPR-11123

The addition of SubProtocolCapable simplifies configuration since it is
no longer necessary to explicitly configure DefaultHandshakeHandler
with a list of supported sub-protocols. We will not also check if the
WebSocketHandler to use for the WebSocket request is an instance of
SubProtocolCapable and obtain the list of sub-protocols that way. The
provided SubProtocolWebSocketHandler does implement this interface.

Issue: SPR-11111

Fix remaining Java compiler warnings, mainly around missing
generics or deprecated code.

Also add the `-Werror` compiler option to ensure that any future
warnings will fail the build.

Issue: SPR-11064

Before this change spring-messaging contained a few WebSocket-related
classes including WebSocket sub-protocol support for STOMP as well
as @EnableWebSocketMessageBroker and related configuration classes.

After this change those classes are located in the spring-websocket
module under org.springframework.web.socket.messaging.

This means the following classes in application configuration must
have their packages updated:

org.springframework.web.socket.messaging.config.EnableWebSocketMessageBroker
org.springframework.web.socket.messaging.config.StompEndpointRegistry
org.springframework.web.socket.messaging.config.WebSocketMessageBrokerConfigurer

MessageBrokerConfigurer has been renamed to MessageBrokerRegistry and
is also located in the above package.

Issue: SPR-11108