Issue: SPR-11357

According to the JDK's documentation and changelog, the Introspector itself safely handles weak references as of JDK 6 update 21 (which is what we require for Spring 4.0).

Issue: SPR-11356

Issue: SPR-9014
Issue: SPR-11297
(cherry picked from commit 23249cda)

* commons-logging-doc:
  Improve 'switch off commons-logging' documentation

Update reference documentation to make it clearer that only
`spring-core` has a direct dependency on `commons-logging`.

Also reference the 'empty jar' alternative option as described in
the SLF4J FAQ.

This change makes it possible to provide no configuration for the
DispatcherServlet when extending
AbstractAnnotationConfigDispatcherServletInitializer, and therefore
provide all config through the "root" context.

Issue: SPR-11357

This in particular allows for specifying "spring.getenv.ignore" and "spring.beaninfo.ignore" in a local way within the application, in case that JVM-level system properties are locked.

Issue: SPR-9014
Issue: SPR-11297

Fix code example in Javadoc for ResultActions

Issue: SPR-11354

equalTo is not a valid method on JsonPathResultMatchers

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Issue: SPR-11348

Issue: SPR-11297
(cherry picked from commit fc361844)

Issue: SPR-11297
(cherry picked from commit 52d050d2)

Issue: SPR-11346
(cherry picked from commit fdd31c0e)

Issue: SPR-11344
(cherry picked from commit d434ef97)

Fixed through downcasting to AspectJ's ReflectionType and ReflectionBasedReferenceTypeDelegate, obtaining the myClass field there. We only fall back to regular class loading if we encounter any other kind of type.

Issue: SPR-11344
(cherry picked from commit c406c56d)

Prior to this commit, a NoClassDefFoundError caught in
TestContextManager's retrieveTestExecutionListeners() method would be
handled differently for implicit default listeners (i.e., listeners not
declared via @TestExecutionListeners) and listeners explicitly declared
via @TestExecutionListeners. Specifically, a NoClassDefFoundError would
cause a test to fail for an explicitly declared TestExecutionListener
but not for an implicitly declared one.

This commit addresses this issue by:

 - Always swallowing a NoClassDefFoundError for both implicitly and
   explicitly declared TestExecutionListeners.
 - Changing the log level from DEBUG to INFO to make such situations
   more visible to the average end user.

Issue: SPR-11347

Assertions made in callbacks invoked on separate thread were not
reaching the test framework. This fix ensures failures are detected
and cause tests to fail.

Issue: SPR-11023

Issue: SPR-11345

This commit deletes methods in RollbackForRequiredEjbTxDaoTestNGTests
that were unnecessarily redeclared. The redeclaration is required for
JUnit's @FixMethodOrder support but not for TestNG's built-in support
for dependent methods.

Issue: SPR-6132

Prior to this commit, all MethodMessageHandlers tests were
implemented in a single class. Since SimpAnnotationMsgHandler
has been refactored with an abstract class, tests also
needed such a refactoring.

This commit creates test fixtures for AbstractMethodMessageHandler.

Issue: SPR-11191

Prior to this commit, it was not clear how to enable the support of matrix
variables in the mvc namespace. As the feature is disabled by default, added
something to highlight the part that explains how to configure it

Issue: SPR-11331

This allows us to avoid early initialization of footprint-heavy ConcurrentHashMaps, and reuses the existing postProcessingLock which will typically be active already when registerExternallyManaged* calls come in from the bean factory's post-processing phase.

Issue: SPR-11343