Issue: SPR-12751

Issue: SPR-12744

Issue: SPR-12752

Animal Sniffer 1.11 fails against XStream 1.4.8 due to classes with 1.8 bytecode level.
Animal Sniffer 1.14 will finally include ASM 5.0.3 for proper 1.8 bytecode support.

Add test that wasn't committed because it matches the ignore list.

Extract the creation of RequestMappingHandlerMapping into protected
method to allow easier use of custom subclasses.

Issue: SPR-12746

Add StreamConverter to provide full support for converting
java.util.stream.Stream instances to and from collections or arrays.

Also attempt to convert the element type if necessary.

StreamConverter is registered by default in the DefaultConversionService
as long as Java8 is available.

Issue: SPR-12175

Fix reserved set definition according to appendix A of RFC 3986

Issue: SPR-12701

Issue: SPR-12654

When a bean is retrieved via JNDI using Java config, we apply the same
inferred more for destruction callbacks as for any other bean. If an
object from the JNDI tree has a `close` or `shutdown` method, the
context calls it when it shutdowns.

Unfortunately, we have no way to know that the bean was retrieved via
JNDI and that its lifecycle is managed outside the application.

The documentation has been updated to reflect that problem explicitly.

Issue: SPR-12551

If an `@EventListener` annotated method returns a Collection or an Array,
each individual items are now published as an event instead of publishing
one event with said collection.

Issue: SPR-12733

The protected validation methods are analogous to ModelAttributeMethodProcessor now.

Issue: SPR-12655

The convertJmsInvokerAccessException() method in
JmsInvokerClientInterceptor now correctly returns the converted
exception instead of throwing it.

JmsInvokerClientInterceptor defines a receiveTimeout field but does not
handle such timeout. This commit adds an additional callback that throws
an RemoteTimeoutException instead.

Sub-classes can override the onReceiveTimeout to throw a different
exception or return a fallback RemoteInvocationResult.

Issue: SPR-12731

With this commit, WebUtils.isValidOrigin() logs an error message instead
of throwing an IllegalArgumentException when Origin header value is
invalid (for example when it does not contain the scheme).

Issue: SPR-12697

* CodeFlowJavadocFix:
  Fix copy/paste error in Javadoc

Deprecated CommonsPoolTargetSource (supporting commons pool 1.5+) in
favor of CommonsPool2TargetSource with a similar contract.

Commons Pool 2.x uses object equality while Commons Pool 1.x used
identity equality. This clearly means that Commons Pool 2 behaves
differently if several instances having the same identity according to
their `Object#equals(Object)` method are managed in the same pool. To
provide a smooth upgrade, a backward-compatible pool is created by
default; use `setUseObjectEquality(boolean)` if you need the standard
Commons Pool 2.x behavior.

Issue: SPR-12532

Previously, the `@order` annotation was managed in an inconsistent way
when placed at the implementation level. For simple beans, it was
discovered properly but wasn't for beans requiring a proxy.

OrderComparator.SourceProvider now explicitly allows to return several
order sources; the default implementation returns not only the factory
method (if  any) but also the target class if it happens to be different
from the class of the bean.

Issue: SPR-12636

Issue: SPR-12639

Issue: SPR-12730

 - fixed typos
 - improved grammar and punctuation
 - fixed class names

Issue: SPR-12728

Issue: SPR-12727

Issue: SPR-12644

Issue: SPR-12724