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

Issue: SPR-11105

The tests introduced in this commit demonstrate the current lacking
support for composable stereotypes on interfaces (using @Transactional)
as a concrete example.

Issue: SPR-11108

- Added explicit reference to “get” and “find” lookup types in the
  class-level Javadoc.
- Updated documentation for the underlying algorithms in
  findAnnotation(Method,Class) and findAnnotation(Class,Class) in line
  with the status quo.
- Reverted recent changes to findAnnotationDeclaringClass() by removing
  meta-annotation support in order to maintain backwards compatibility
  with previous releases.

Fix the reference documentation example for ConversionServiceFactoryBean
to use a `<set>` instead of a `<list>`.

Issue: SPR-10802

Replace `hsqldb:hsqldb:1.8.0.10` with `org.hsqldb:hsqldb:2.3.1` and
fix breaking tests.

Issue: SPR-10947

* SPR-9164:
  Add BigDecimal support for SpEl numeric operations

Prior to this change, SpEL supported numeric operations for int, float,
ect. `new java.math.BigDecimal('0.1') > 0` evaluated to false
(BigDecimal is truncated to int)

This commit introduces support for BigDecimal operations for all
mathematical operators. `new java.math.BigDecimal('0.1') > 0` now
evaluates to true (the comparison is made with BigDecimals)

Issue: SPR-9164

* fix-SPR-9194:
  Change SpEL equality operators to use .equals

Prior to this commit the SpEL operators `==` and `!=` were using the
Java `==` comparison operator as part of their equality checking. It is
more flexible to use the equals() method on Object.

Under this commit the change to .equals() has been made and the equality
checking code has been pushed into a common method in the Operator
superclass. This commit also makes some tweaks to the other operator
classes - the Float case was missing from OpGT.

Issue: SPR-9194

Issue: SPR-11057

Prior to this commit, the getValue(Annotation, String) method in
AnnotationUtils failed to retrieve the value of the desired annotation
attribute if the annotation itself was not public -- for example if the
annotation was declared as package private.

This commit addresses this issue by ensuring that getValue(Annotation,
String) uses reflection to make the desired annotation attribute method
accessible before attempting to invoke it to retrieve the value.

Issue: SPR-11104

As of Gradle 1.8, ‘testReport true’ is deprecated. Thus in order to
generate TestNG reports alongside JUnit reports with Gradle 2.0 and
beyond, we are now using:

  getReports().getHtml().setEnabled(true)

* SPR-11083:
  Allow instrumentation to be used with Attach API