Issue: SPR-12473
(cherry picked from commit 5ac86803)

Prior to this change, the ResourceUrlEncodingFilter would work well when
the application is mapped to "/". But when mapped to a non-empty servlet
context, this filter would not properly encode URLs and apply
ResourceResolver URL resolution for resources.

This commit makes sure that the lookup path is properly resolved in the
request URI, taking into account the servlet context.

Issue: SPR-12459

Issue: SPR-12467

Issue: SPR-12470

Issue: SPR-12450

The removed test testConfigFileParsingErrorWhenNamedBeans() could cause
a groovyc compilation error, for example when using latest IntelliJ IDEA.

Issue: SPR-12435

Issue: SPR-12431

Issue: SPR-9174

Issue: SPR-12406

Using the "quotes" substitution group by default leads to side effect
when the "*" character is used. This is especially true for AOP pointcut
or for MVC mappings.

Plain verbatim might work most of the time unless you intend to highlight
a piece of code or a comment.

Issue: SPR-12456

Upgrade undertow dependency to 1.1.0.Final.
Add support for undertow 1.1.0.Final in the
UndertowRequestUpgradeStrategy, after a breaking change in the
`io.undertow.websockets.jsr.ConfiguredServerEndpoint` constructor.

Issue: SPR-12302

SPR-12354 applied new checks to make sure that served static resources
are under authorized locations.

Prior to this change, serving static resources from Servlet 3 locations
such as "/webjars/" would not work since those locations can be within
one of the JARs on path. In that case, the checkLocation method would
return false and disallow serving that static resource.

This change fixes this issue by making sure to call the
`ServletContextResource.getPath()` method for servlet context resources.

Note that there's a known workaround for this issue, which is using a
classpath scheme as location, such as:
"classpath:/META-INF/resources/webjars/" instead of "/webjars".

Issue: SPR-12432

Consistent Map<String, ?> declarations and use of LinkedHashMap for incoming JDBC operation parameters

Issue: SPR-12462

AnnotationBeanPostProcessors defensively catch and translate NoClassDefFoundErrors from class introspection

Issue: SPR-12461

Issue: SPR-12457

Issue: SPR-12460

Issue: SPR-12448

MethodParameter generally uses volatile variables where applicable now (as well as a local copy of the parameterNameDiscoverer field)

Issue: SPR-12453

MutablePropertySources uses an internal CopyOnWriteArrayList for defensiveness against concurrent modifications

Issue: SPR-12428

GroovyBeanDefinitionReader consistently throws BeanDefinitionParsingException for invalid files of any name

Issue: SPR-12435

Issue: SPR-12443

This commit fixes the parsing of message destinations such as
"/user/anna/queue/foo", reverting a regression introduced by SPR-11506,
which worked well with @SendToUser use cases but caused issues for
messages sent to other users.

Issue: SPR-12444

Prior to this commit, JOptCommandLinePropertySource prevented the
possibility of non-String option arguments. This effectively prevents
the use of JOpt's #ofType support (which allows specifying custom
argument types).

Now, non-String arguments are detected and converted to strings as
necessary. JOpt's #ofType now works as expected. A test has been added
to cover this case.

Without this change the plus operator would fail to
include a CHECKCAST in generated bytecode when it
was compiled in cases where one of the operands
has a runtime type of String but a statically
declared type that was not String (i.e. Object).

Issue: SPR-12426

* SPR-12425:
  Add Id to JmsListenerEndpoint Docs

Issue: SPR-12425

- remove leading '/' and control chars
- improve url and relative path checks
- account for URL encoding
- add isResourceUnderLocation final verification

Issue: SPR-12354

The following commit allowed HTTP DELETE with body:
https://github.com/spring-projects/spring-framework/commit/584b831bb9390a49c791d180d023e3a585203215

However it broke buffered requests even without a body since JDK 1.6
and 1.7 do not support calls to getOutputStream with HTTP DELETE.

This commit set the doOutput flag back to false if the actual buffered
body is 0 length.

Issue: SPR-12361

Issue: SPR-12418