Issue: SPR-11116

Apply consistent styling to new classes introduced in Spring 4.0.

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

Issue: SPR-11046

Also optimized getTypeForFactoryMethod's implementation for non-generic factory methods, and reduced calls to getResolvedFactoryMethod in order to avoid repeated synchronization.

Issue: SPR-11034

DefaultListableBeanFactory performs a fallback check for autowire candidates now, which GenericTypeAwareAutowireCandidateResolver implements to accept raw type matches if the target class has unresolvable type variables. Full generic matches are still preferred; the BeanFactory will only start looking for fallback matches if the first pass led to an empty result.

Issue: SPR-10993
Issue: SPR-11004

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

Issue: SPR-9965