Relaxed final declarations and protected doInvoke methods

Issue: SPR-12484
YamlProcessor defensively closes InputStream

Issue: SPR-12487
OrderUtils defensively checks for presence of javax.annotation.Priority

Issue: SPR-12489
Common annotation processing for imported and nested classes within configuration classes

Issue: SPR-12486
BeanFactory accepts getBean arguments for non-prototype beans as well

Issue: SPR-12488
Polishing
BeanFactory accepts getBean arguments for non-prototype beans as well

Issue: SPR-12488