Introduced "globalInitializerClasses" next to the existing "contextInitializerClasses", applying to FrameworkServlets as well

Issue: SPR-11314

Added setModulesToInstall with convenient Class vararg, renamed setFindModules to setFindModulesViaServiceLoader, made existing setModules override any other setting

Issue: SPR-11040

Issue: SPR-11279

Issue: SPR-11040

This change involves a general upgrade to Jackson 2.3 in our build.

Issue: SPR-11261

Issue: SPR-11245

Issue: SPR-11241

Issue: SPR-11221

Update code to have a consistent number of new-line characters after
import statements.

Apply consistent styling to new classes introduced in Spring 4.0.

- Javadoc line wrapping, whitespace and formatting
- General code whitespace
- Consistent Assert.notNull messages

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

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

Fixing standard multipart binding when multiple parts share
the same name.

Uncomment previously @Ignored tests now that Jetty supports
Servlet 3.0 spec.

Issue: SPR-10591

This change disables the processing of external entities in
SourceHttpMessageConverter by default and provides an option to enable
it if required.

This change replaces CloseableHttpClient with HttpClient in the
methods signatures of HttpComponentsClientHttpRequestFactory.
This allows 3rd party libraries such as Spring OAth, which configure
an instance of HttpComponentsClientHttpRequestFactory on the
RestTemplate to remain compatible with both Spring Framework 3/4

Issue: SPR-11053

Upgraded to Apache HttpComponents HttpClient 4.3.1 and HttpAsyncClient 4.0 GA, as well as Jackson 2.2.2

This change adds async web request timeout handling to OSIV filters
and interceptors to ensure the session or entity manager is released.

Issue: SPR-10874

- add WebSocketHttpHeaders
- client-side support for WebSocket extensions
- DefaultHandshakeHandler updates
- replace use of ServletAttributes in JettyRequestUpgradeStratey
- upgrade spring-web to jetty 9.0.5

Issue: SPR-8826

The key contract is MvcUrls. An instance is automatically created with
the Spring MVC namespace and the MVC Java config but can also be easily
created in any configuration.

Some example tests can be found in DefaultMvcUrlsTests.

Issue: SPR-10665, SPR-8826

MvcUriComponentsBuilder allows creating URIs that point to Spring MVC
controller methods annotated with @RequestMapping. It builds them by
exposing a mock method invocation API similar to Mockito, records the
method invocations and thus builds up the URI by inspecting the mapping
annotations and the parameters handed into the method invocations.

Introduced a new SPI UriComponentsContributor that should be implemented 
by HandlerMethodArgumentResolvers that actually contribute path segments 
or query parameters to a URI. While the newly introduced 
MvcUriComponentsBuilder looks up those UriComponentsContributor instances 
from the MVC configuration.

The MvcUriComponentsBuilderFactory (name to be discussed - MvcUris maybe?) 
prevents the multiple lookups by keeping the UriComponentsBuilder 
instances in an instance variable. So an instance of the factory could 
be exposed as Spring bean or through a HandlerMethodArgumentResolver to 
be injected into Controller methods.

Issue: SPR-10665, SPR-8826

Issue: SPR-10222

Prior to this commit, @ControllerAdvice annotated beans would
assist all known Controllers, by applying @ExceptionHandler,
@InitBinder, and @ModelAttribute.

This commit updates the @ControllerAdvice annotation,
which accepts now base package names, assignableTypes,
annotations and basePackageClasses.

If attributes are set, only Controllers that match those
selectors will be assisted by the annotated class.
This commit does not change the default behavior when
no value is set, i.e. @ControllerAdvice().

Issue: SPR-10222

Includes revisions of MethodParameter and DependencyDescriptor (in particular towards a reference to the containing class). Also refines several ResolvableType method signatures.

Issue: SPR-9965

Fix HttpInvokerClientInterceptor.convertHttpInvokerAccessException to
return the translated exception rather than throwing it. This brings
the method implementation in line with the Java Doc and the obvious
original intent.

Issue: SPR-10965

Comprehensive update to the framework's TimeZone handling, including a new TimeZoneAwareLocaleContext and a LocaleContextResolver for Spring MVC

A few noteworthy minor changes: LocaleContext.getLocale() may return null in special cases (not by default), which our own accessing classes are able to handle now. If there is a non-null TimeZone user setting, we're exposing it to all collaborating libraries, in particular to JSTL, Velocity and JasperReports. Our JSR-310 and Joda-Time support falls back to checking the general LocaleContext TimeZone now, adapting it to their time zone types, if no more specific setting has been provided. Our DefaultConversionService has TimeZone<->ZoneId converters registered. And finally, we're using a custom parseTimeZoneString method now that doesn't accept the TimeZone.getTimeZone(String) GMT fallback for an invalid time zone id anymore.

Issue: SPR-1528