Update JavaDoc
Merge in changes to GenericCollectionTypeResolver from Spring 3.2
Add ComparableComparator
Add NullSafeComparator
Add BooleanComparator
Add InstanceComparator
Add InvertibleComparator
Add CompoundComparator
Add ConcurrentReferenceHashMap
Merge in changes to Assert from Spring 3.2
Merge in changes to ReflectionUtils from Spring 3.2
Merge in changes to ClassUtils from Spring 3.2
Merge in changes to CollectionUtils from Spring 3.2
Add StreamUtils from Spring 3.2
Merge in changes to FileCopyUtils from Spring 3.2
Merge in changes to LinkedCaseInsensitiveMap from Spring 3.2
Add tests for LinkedMultiValueMap from Spring 3.2
Update JavaDoc in MultiValueMap
Merge in changes to NumberUtils from Spring 3.2
Merge in changes to ObjectUtils from Spring 3.2