Next Development Version
Accept empty Content-Type header

Issue: SPR-12173
(cherry picked from commit 70412a9)
Client request implementations enforce RFC 6265 (cookies in a single header)

Issue: SPR-12196
(cherry picked from commit 26a93b6)
Polishing
Log warning for single optional constructor when no default constructor to fall back to

Issue: SPR-12161
(cherry picked from commit 80cec01)
ScheduledAnnotationBeanPostProcessor avoids needless re-scanning of non-annotated classes

Issue: SPR-12189
(cherry picked from commit 58b22ce)
Polishing
(cherry picked from commit 50e50d0)
LiveBeansView escapes double quotes in resource descriptions

Issue: SPR-12252
(cherry picked from commit 1ffefcb)
WebAsyncManager avoids concurrentResult.toString() and builds correct DeferredResultProcessingInterceptor keys

Issue: SPR-12253
(cherry picked from commit 901346e)
Remove outdated references to ContextLoaderServlet

Issue: SPR-7725
Further locking optimizations for the retrieval of non-singleton beans

Issue: SPR-12250
(cherry picked from commit ac4103d)
Provider declaration for @Value method argument works again

Issue: SPR-12297
(cherry picked from commit c672678)
Consistent reset of resource holders on doBegin failure

Issue: SPR-12280
(cherry picked from commit 9758bc7)
Explicitly detect (and log) private @Scheduled methods on CGLIB proxies

Issue: SPR-12308
(cherry picked from commit 47ed4d6)
Consistent use of LinkedHashSet for interfaces (since interface order may matter in subtle cases)
(cherry picked from commit 6f9d7da)
Deprecated BeanDefinitionDocumentReader's setEnvironment method in favor of access via XmlReaderContext

Issue: SPR-12248
Consistently accept empty Content-Type header and empty character encoding

Issue: SPR-12173
(cherry picked from commit a1c0905)
ConfigurationClassParser avoids ImportBeanDefinitionRegistrar double scan

Issue: SPR-12334
QualifierAnnotationAutowireCandidateResolver calls BeanFactory.getType defensively

Issue: SPR-12191
(cherry picked from commit 73ce3b5)
Set ResponseStatusExceptionResolver.messageSource in the MVC Java config

Issue: SPR-12380
(cherry picked from commit aa82da8)