Issue: SPR-13987

This commit adds the timeunit to the interface documentation
of WebRequest.checkNotModified().

JSON payloads are sometimes prepended with a static string prefix
to prevent Cross Site Scripting Inclusion attacks (XSSI).
Prior to this commit, doing so would fail the MockMvc
`JsonPathResultMatchers` since they're considering the whole response as
the JSON payload.

This commit adds a new `JsonPathResultMatchers.prefix` method that
configures the matchers to check for the presence of that string (i.e.
fail if it's not there) and only consider the rest of the response body
as the JSON payload for other assertions.

Issue: SPR-13577

Previously MockMvc builders failed to share the WebConnection used for
managing cookies in the MockMvcWebConnection. This meant that the various
CookieManagers would have different states.

This commit ensures that the WebConnection is set on the
MockMvcWebConnection.

Fixes SPR-14066

Latest dependency updates: EhCache 3.0 RC1, HtmlUnit 2.20, Apache HttpClient 4.5.2, Jackson 2.7.3, JasperReports 6.2.1, Jetty 9.3.8, JRuby 1.7.24, JsonAssert 1.3, JsonPath 2.2, POI 3.14, Selenium 2.52, SLF4J 1.7.19, Animal Sniffer 1.15, Undertow 1.3.19, H2 1.4.191

Issue: SPR-14067

Issue: SPR-14033

Issue: SPR-14069

This commit introduces a test to demonstrate that inlined properties
override properties loaded from Properties files in
@TestPropertySource.

Issue: SPR-14068

Issue: SPR-14051

The possibility of NPE was introduced in the previous commit:
https://github.com/spring-projects/spring-framework/commit/971ccab038ad8e549d515a80e2d64c5d4c80c86b

Issue: SPR-14046

* SPR-14050:
  Fully test proxy support in ReflectionTestUtils
  Polishing
  Document proxy support in ReflectionTestUtils
  Fix bugs in ReflectionTestUtils related to proxies
  Polishing
  Support proxied objects in ReflectionTestUtils

This commit adds a test for JDK dynamic proxies and fleshes out the
test for CGLIB proxies.

Issue: SPR-14050

Issue: SPR-14050

Issue: SPR-14050

This commit adds support for unwrapping proxies in the setField() and
getField() methods in ReflectionTestUtils.

Instead of always accessing fields directly on the supplied
targetObject (which may be a proxy), AopTestUtils is now used to obtain
the potential ultimateTargetObject which is then used for accessing
fields.

Issue: SPR-14050

Issue: SPR-14026

Issue: SPR-14056

* pr/998:
  Polish contribution
  Add converters between Enum and Integer

Issue: SPR-14039 - Closes gh-998

Before this commit the DefaultUserDestinationResolver did not support
well broker destinations that use dot as separator with a built in
assumptions that the destinations it resolves must start with slash.

This change adds PathMatcher property that is used to determine if
an alternative path separator is in use and if so the leading slash is
left out.

Issue: SPR-14044

Issue: SPR-14058

This commit primarily allows for a `SynthesizingMethodParameter` to be
created for a `Constructor` parameter but also introduces an additional
overloaded constructor from `MethodParameter`.

Issue: SPR-14054

Issue: SPR-14012

Previously, a package private `@ManagedResource` annotated bean was
registered to the JMX domain even if any attempt to invoke an operation
on it will fail since it has to be public.

This commit validates that any `@ManagedResource` annotated bean is
public and throws an InvalidMetadataException otherwise. Note that the
actual bean type does not have to be public as long as the class
annotated with `@ManagedResource` in the hierarchy is pubic and no extra
operations or attributes are defined on the child.

Issue: SPR-14042

This commit fixes an old bug in ModelAndViewContainer where getModel
returns a new ModelMap instance that isn't saved and re-used.

Issue: SPR-14045

The DeferredResult~ and the ResponseBodyEmitterReturnValueHandler now
each expose an adapter mechanism for plugging in other async return
value types. As a result the ListenableFutureReturnValueHandler and
CompletionStageReturnValueHandler are no longer needed and are now
deprecated.

Issue: SPR-14046

Issue: SPR-14048