New afterTimeout and afterCompletion callbacks

afterTimeout can provide a concurrent result to be used instead of the
one that could not be set or returned on time

Interceptor exceptions cause async processing to resume treating the
exception as the concurrent result

Adapter classes for convenient implementation of the interfaces

Issue: SPR-9914

Prior to this commit, the PropertyResolver API (and therefore the
Environment API) allowed callers a choice between
 #resolvePlaceholders and #resolveRequiredPlaceholders for low-level
${placeholder} resolution. However, when calling the higher level
 #getProperty variants, users had no control over whether property
values returned with unresolvable ${placeholders} would result in an
exception or simply be passed through.

This commit introduces a #setIgnoreUnresolvableNestedPlaceholders
property via ConfigurablePropertyResolver, defaulting to false, the
value of which is respected by AbstractPropertyResolver#getProperty
method implementations. See the new test in
PropertySourcesPropertyResolverTests for usage examples.

Issue: SPR-9569, SPR-9473

 - Upgrade to 0.1.6 snapshot of docbook plugin

 - Fully qualify PDF artifact name as 'spring-framework-reference.pdf'
   instead of former 'spring-reference.pdf'

Issue: SPR-9598

Moving @EnableMBeanExport and its MBeanExportConfiguration
@Configuration class into context.annotation caused a side effect with
ComponentScanningWithLTWTests, which component scans context.annotation
in order to test LTW behavior. Picking up MBeanExportConfiguration
without proper MBean configuration resulted in a NullPointerException
during test execution.

This commit simply filters out all @Configuration classes from the LTW
test's component-scanning directive.

Issue: SPR-8943

Prior to this commit, @EnableMBeanExport was declared in the
jmx.export.annotation package. This makes logical sense, but
nevertheless creates a package cycle, because @EnableMBeanExport depends
on MBeanExportConfiguration which in turn depends on context.annotation
types like @Configuration, @Bean, and @Role.

context.annotation.config.MBeanExportBeanDefinitionParser, on the other
hand already has dependencies on types in jmx.support. Together, this
means that a package cycle was introduced.

The solution to this is simple: move @EnableMBeanExport and friends from
jmx.export.annotation => context.annotation. This has been the strategy
for other @Enable annotations and for the same reasons. It also makes a
kind of logical sense: just like you find <context:mbean-export> and
<context:load-time-weaver> under the context: XML namespace, so too do
you find their @Enable* counterparts under the context.annotation
namespace.

Issue: SPR-8943

Commit 5327a7a3 moved
@EnableSpringConfigured from beans.factory.aspectj =>
context.annotation within the spring-aspects module. This resolved a
package cycle but had the side-effect of causing a "split package" [1]
problem between spring-context and spring-aspects in OSGi-based
classloader environments because the context.annotation package now
exists in both modules.

The simplest and best solution from an OSGi perspective is to relocate
@EnableSpringConfigured and its supporting SpringConfiguredConfiguration
class into a new package. This commit moves both these types into
context.annotation.aspectj, following convention with other such
"aspectj"-qualified packages in the spring-aspects module.

As with the previous move, it is presumed this change will be low-impact
as the "spring-configured" approach to domain object injection is a
niche feature to begin with, and @EnableSpringConfigured has existed in
its current location only since 3.1.2 and this change is being made in
time for 3.1.3.

[1]: http://wiki.osgi.org/wiki/Split_Packages

Issue: SPR-9811, SPR-9441

Issue: SPR-9914

After this change a DeferredResult can be set before a
DeferredResultHandler has been set.

# By Marten Deinum
* SPR-9909:
  Allow setting WSDL document as a Resource

Prior to this change, LocalJaxWsServiceFactory allowed specifying a WSDL
document URL. Now users may also specify a WSDL document represented as
a Spring Resource object for convenience.

Issue: SPR-9909

# By Phillip Webb
* SPR-8943:
  Introduce @EnableMBeanExport
  Polish whitespace

Add support for @EnableMBeanExport annotation allowing @Configuration
classes to easily export all MBeans and @ManagedResources from the
Spring application context. The annotation is functionally equivalent
to the XML <context:mbean-export/> element.

Issue: SPR-8943

Issue: SPR-9853

Oracle error ORA-06550 will now raise a BadSqlGrammarException.

Issue: SPR-9853

Issue: SPR-9486

# By Satyapal Reddy
* SPR-9486:
  Add SpEL support for float literals

This change ensures that SpEL expressions involving floats are
supported natively as opposed to the previous behavior which required
conversion to double, leading to potential downstream conversion
ambiguities.

Issue: SPR-9486

* SPR-9751:
  Add SpEL support for increment/decrement operators

With this commit the Spring Expression Language now supports
increment (++) and decrement (--) operators. These can be
used as either prefix or postfix operators. For example:
'somearray[index++]' and 'somearray[--index]' are valid.

In order to support this there are serious changes to the
evaluation process for expressions. The concept of a
value reference for an expression component has been introduced.
Value references can be passed around and at any time the actual
value can be retrieved (via a get) or set (where applicable). This
was needed to avoid double evaluation of expression components.
For example, in evaluating the expression 'somearray[index++]--'
without a value reference SpEL would need to evaluate the
'somearray[index++]' component twice, once to get the value and
then again to determine where to put the new value. If that
component is evaluated twice, index would be double incremented.
A value reference for 'somearray[index++]' avoids this problem.

Many new tests have been introduced into the EvaluationTests
to ensure not only that ++ and -- work but also that the
introduction of value references across the all of SpEL has
not caused regressions.

Issue: SPR-9751

When obtaining an async result, tests will now await concurrent
processing to complete for the exact amount of time equal to the
actual async timeout value.

Issue: SPR-9875

Issue: SPR-7905

Before this change View implementations set the response content type
to the fixed value they were configured with.

This change makes it possible to configure a View implementation with
a more general media type, e.g. "application/*+xml", and then set the
response type to the more specific requested media type, e.g.
"application/vnd.example-v1+xml".

Issue: SPR-9807.

* tmeighen-SPR-7905:
  Support wildcard style media types in JSON converters

Add "application/*+json" to supported media types for both Jackson
message converters.

Issue: SPR-7905

Some servlet containers (iPlanet) parse the Accept header and return
multiple values from request.getHeader("Accept"). The HttpHeaders
getAccept method has been updated to accommodate that hopefully
without causing any other issues.

The extra functionality is in effect only if we find only one
MediaType and there is more than one value for the 'Accept' header.

Issue: SPR-9655

Issue: SPR-9898

Previously UriComponentsBuilder used a regular expression for parsing
query name-value pairs where both name and value were expected to not
contain neither '&', not '='. The idea is that the presence of reserved
characters makes it impossible to guess correctly how to parse the
query string (e.g. a=b&c).

This change relaxes the constraint on query param values, allowing them
to contain '='. In effect '&' is the ultimate separator of name-value
pairs, and any '=' in values is ignored. For example "q=1USD=?EUR" is
interpreted as "q equals '1USD=?EUR'".

Issue: SPR-9832

Issue: SPR-9822

Prior to this commit, utility methods in JdbcTestUtils interpreted SQL
comments as separate statements, resulting in an exception when such a
script is executed.

This commit addresses this issue by introducing a
readScript(lineNumberReader, String) method that accepts a comment
prefix. Comment lines are therefore no longer returned in the parsed
script. Furthermore, the existing readScript(lineNumberReader) method
now delegates to this new readScript() method, supplying "--" as the
default comment prefix.

Issue: SPR-9593

Renamed WebTestExecutionListener to ServletTestExecutionListener.

ModelAndViewAssert now uses assertion methods in the newly
introduced AssertionErrors class.